Introduction

In January 2021, a rally organized to protest the results of the 2020 presidential election escalated into the violent takeover of the United States Capitol building. While rioters utilized a wide variety of symbols and slogans in the planning and execution of those attacks, religious motifs were a regular fixture of what one reporter labeled “a Christian insurrection.”Footnote 1 Religion’s appearance that afternoon was not unexpected, as prominent religious supporters of the Trump Administration framed electoral defeat as an anti-religious conspiracy even before the November election.Footnote 2 In the days before the Capitol violence, supporters launched a “Jericho March” against alleged electoral fraud, intended to imitate the biblical siege of Jericho by Israelite forces.Footnote 3

Analytically, the role of religion in the 2021 Capitol attacks is the latest manifestation of a concept that has attracted significant recent attention in the social sciences: Christian nationalism. Leading scholars define Christian nationalism as a “pervasive set of beliefs and ideals that merge American and Christian group memberships,” and have presented convincing evidence of its links to a spectrum of conservative politicians and policy positions, notably the election of President Donald Trump (Whitehead et al., 2018a, 2018b, 148; Perry, Whitehead and Grubbs 2021). While this body of work predates the 2021 violence, it comes with obvious implications for understanding the sources of support for the riots. However, significant theoretical work remains to be done if we are to explain the factors that may tie Christian nationalism, essentially a set of political-theological beliefs, to support for or participation in political violence.

We advance a two-part theory linking Christian nationalism to political violence, particularly the January 2021 Capitol attacks. First, we expect an independent link between Christian nationalism and support for political violence, including the right-wing violence in the wake of Trump’s electoral defeat. Second, because robust research on religion and violence suggests that “extreme” religious beliefs are incomplete explanations of support for or participation in political violence, we argue that the effect of an ideology like Christian nationalism is likely to be conditioned by other individual characteristics that scholars have identified as particularly susceptible to elite cues. We focus on three such characteristics because of their links to threat perception and boundary construction: perceived victimhood, reinforcing racial and religious identity, and immersion in conspiratorial information sources. More succinctly, we argue that Christian nationalism is strongly related to support for specific and abstract political violence on its own, but will be most potent when combined with certain individual-level characteristics that political elites have a hand in cueing.

This theoretical approach, contextualizing the study of Christian nationalism within the broader study of religion and political violence, offers one attempt at “integrat[ing] Christian nationalism into conceptions of politicized religion” (Lewis, 2021, 115). The 2021 Capitol attacks were unique in American history, but links between religion, extremism, and violence are well-trodden analytic ground in the social sciences, with empirical work on the United States and a host of global cases. Drawing on such work suggests links between essentially a bottom-up ideology like Christian nationalism and top-down elite discourse that, when combined, may result in violence. Specifying such channels represents theoretical progress and may help to avoid mistakes of earlier generations in the study of religion and political violence, which at times overstated religious ideological influences in the search for “moderate” religious beliefs that would alone reduce security threats.Footnote 4

Christian Nationalism: Tying American Religion to Political Violence

The set of beliefs characterized as “Christian nationalism” blends a religious understanding of America’s origins with nearly “apocalyptic” views on future threats to that Christian heritage (Gorski, 2019, 165). While ties between religion and American nationalism are not new (Bellah, 1992), recent scholarship has focused on a more particular operationalization of “a unique and independent ideology” centered on “a symbolic defense of the United States’ perceived Christian heritage” (Whitehead et al., 2018a, 2018b, 147). Christian nationalism not only affirms a uniquely American Christian history, but also highlights the alleged danger to that heritage from rapid demographic, legal, and political change. Conceptually and empirically, Christian nationalism “is not synonymous with or reducible to” dimensions of religiosity, such as levels of religious attendance, or elements of political ideology, like partisanship (Ibid, 153).Footnote 5 Christian nationalism, as operationalized in this recent literature, resonates with the broader concept of “religious nationalism” (Soper & Fetzer, 2018) in which a “fusion” (Grzymala-Busse 2015, 7) develops between religion and national identity. Fox (2004) uses cross-national data to argue that religious nationalism is increasingly associated with political violence, while also arguing that religious nationalism’s influence should be thought of as contingent on broader political dynamics in a given country. Soper and Fetzer (2018), Gorski (2017), and others highlight that, while Christian nationalism has been a regular historical feature of the American landscape, it has generally been a minority position in contrast with the more dominant, pluralistic concept of “American civil religion.”Footnote 6

This conceptualization of Christian nationalism has generated a flurry of recent research linking this political-religious ideology to attitudinal and behavioral outcomes, especially those tied to Donald Trump’s presidency. In a series of projects, Whitehead, Perry and coauthors have demonstrated an independent relationship between Christian nationalism and Trump support, even accounting for alternative explanations of Trumpism such as racism and socioeconomic status (Baker et al., 2020; Whitehead & Perry, 2020). Gorski (2019, 165) argues that “Trumpism, then, is a reactionary and secularized version of white Christian nationalism.” Similar empirical work has extended Christian nationalism beyond electoral contexts, for example tolerance of racism (Davis & Perry, 2020), anti-immigrant attitudes (McDaniel et al., 2011), anti-Islamic sentiment (Shortle & Gaddie, 2015), attitudes towards same-sex unions (Whitehead & Perry, 2015), and even responses to COVID-19 (Perry et al., 2020a, 2020b). While not tied to extrajudicial political violence, Christian nationalism has been linked to tolerance of police violence against African-Americans (Perry et al., 2019), as well as opposition to gun control regulations (Whitehead et al., 2018a, 2018b).

Over roughly the same time period, scholars have paid closer attention to the impact of conspiracism on public opinion, including its links to religious symbolism and imagery. The QAnon movement is particularly relevant given both the visible presence of QAnon supporters at the Capitol riot and the religious imagery deeply embedded within QAnon canon. QAnon is a conspiracy movement that began on the 4chan imageboard in 2017 when an anonymous poster using the pseudonym “Q” began communicating cryptic messages said to convey the details of Donald Trump’s secret battle with the “deep state.” Although this movement is typically explained through political affiliation with Donald Trump, QAnon lore––which shares many similarities with claims made during the “Satanic panic” of the 1980s––is littered with eschatological “end times” and Manichean imagery regarding a final war (called “the Storm”) between a corrupt, evil elite and a virtuous, good people. The linkage between religion, conspiracy thinking, and extremist political movements is nothing new (Barkun, 1997, 2017). Although less well developed in scholarly literature, initial evidence seems to indicate that Christian nationalism may be tied to support for the QAnon movement and related conspiracy theories.Footnote 7

While links to protesting alleged election fraud have not appeared in this growing body of literature, there is ample evidence in reportage from before, during, and after the Capitol riots to motivate an expectation that Christian nationalism played a part in this novel form of American political violence. Several of Trump’s most prominent Christian supporters framed his efforts to undermine the 2020 election results in religious terms. For example, shortly after the election, prominent televangelist Paula White declared, “demonic confederacies…are attempting to steal the election from Trump.”Footnote 8 This elite rhetoric translated into social organization through the Jericho March, an initiative led by Trump loyalists that held a series of prayer meetings aimed at overturning the election, “modeled on a biblical battle in which the Israelites marched around the city of Jericho until its walls crumbled.”Footnote 9 A Catholic archbishop described attendees as, “the praying army that walks around the walls of lies and betrayal in order to bring them down.”Footnote 10 Members of the Proud Boys knelt in prayer to Jesus for “reformation and revival” in the United States.Footnote 11 Protest signs linked conspiratorial allegations of voter fraud to biblical passages, and protester interviews featured references to the end times and scriptural prophecy about Trump’s election.Footnote 12 Rioters brandished bibles, invoked Jesus’ name in chants, and carried placards stating “Jesus is My Savior, Trump is My President.”Footnote 13 Attackers in the Senate chamber prayed “thank you heavenly father for gracing us with this opportunity.”Footnote 14

Interestingly, after the Capitol attacks, a series of faith-leaders and policy analysts have agreed with protesters that Christian nationalism was at the root of that day’s events. Several hundred prominent evangelical clergy members launched the “Say ‘No’ to Christian Nationalism” campaign to “recognize and condemn the role Christian Nationalism played in the violent, racist, anti-American insurrection at the United States Capitol on January 6.”Footnote 15 The evangelical magazine Christianity Today adopted a similar framing in “offer[ing] advice to church leaders trying to deradicalize members of their own community.”Footnote 16 Deradicalization raises the specter of ideological approaches to countering terrorism developed largely with Muslim communities in mind. Two security analysts explicitly draw this link in arguing, “Programs designed to reform violent jihadis could help tackle the spread of QAnon and other conspiracy theories in evangelical communities.”Footnote 17

Conditioning Christian Nationalism’s Effects: Theories of Religion, Ideology, and Violence

Extant research and journalistic evidence from the day of the attack justify a baseline expectation that Christian nationalism would be tied to support for political violence at the Capitol on January 6. However, analysts linking this basic expectation to a longer history of ideological approaches to the study of radicalization and political violence should be cautious. As the Brennan Center for Justice summarizes, “The key assumption of radicalization theory is that individuals who adopt ‘extremist’ ideologies start down a conveyor belt that leads inexorably toward becoming a terrorist. While this proposition may have some intuitive appeal, decades of empirical research disproves it.”Footnote 18 We briefly review the evidence that purely ideological approaches to the study of religion and violence have significant limitations, and then use extant literature to develop more nuanced expectations tying the influence of Christian nationalist ideology to individual characteristics that are both connected to Christian nationalism, and susceptible to inflammation vis-a-vis elite cues. In sum, we argue that perceived victimhood, reinforcing racial and religious identity, and immersion in conspiratorial information networks are each likely to increase individual exposure and/or receptivity to elite rhetoric cueing these identities and views of the world, which in turn strengthen the link between Christian nationalism and violence.

While focus on Christian nationalism and political violence has taken on new urgency after the Capitol riots, the search for ideological origins of violence has a long and contentious history, especially in the study of religion and terrorism. Early studies of religious terrorism highlighted the “theological demand or imperative” at the root of such violence (Hoffman, 1993, 2), its roots in “divine instructions transmitted long ago or in interpretations of precedents from founding periods” (Rapoport, 1984, 674), and the “cosmic struggle” motivating participants (Juergensmeyer, 2017). Prominent post-9/11 policy reports applied such theoretical claims to Muslim communities, where, supposedly, “the struggle underway…is essentially a war of ideas”Footnote 19 requiring “robust response” to “an ideological threat.”Footnote 20 The Obama Administration’s “Joint Strategy on Countering Violent Extremism” asserted “commonality in the ideology and narratives employed by terrorist groups,”Footnote 21 and the Trump Administration doubled down on “combat[ing] the violent, extreme, and twisted ideologies that purport to justify the murder of innocent victims.”Footnote 22

Extensive research on religion and violence, however, raises significant questions about the sufficiency of ideological explanations. At a basic level, a multitude of studies have shown no consistent evidence of links between religiosity and support for terrorist violence in several comparative settings (Fair & Shepherd, 2006). As a 2016 Wilton Park (a UK executive agency designed as a forum for discussion of global strategy) statement summarized, “research done in multiple regions suggests that those who are more devout are generally less likely to support violent extremism.”Footnote 23 More nuanced approaches that try to measure the impact of particular religious beliefs, such as support for religious influence over politics, similarly find inconsistent support (Fair et al., 2012). Additional research suggests, “The role of religion as a potential driver of violent extremism is significant, but religion usually interacts with a wide range of other factors” (Mandaville & Nozell, 2017, 1). It also resonates with classic research in American public opinion suggesting the malleability of popular attitudes, particularly in response to elite cues that frame events in a compelling manner (Zaller, 1992).

Similar to this emphasis on elite framing, one productive move in recent scholarship on violence and religious beliefs has been a pivot to highlight the importance of what Thurston (2020, 8) calls the “meso-level” elites whose cues mobilize followers and build public support for violence. This approach suggests that, in the general public, the importance of religious beliefs ought to be contingent on other individual characteristics that render someone in the general public susceptible to the cues coming from violent entrepreneurs. This conclusion comes with implications for understanding the likely relationship between Christian Nationalism and the Capitol riot. While beliefs may make a contribution to support for extremist behavior, there is good reason to expect their effect to be contingent on elite inflammation of particular individual-level characteristics via cues.Footnote 24 This is in keeping with Gorski and Türkmen-Dervişoğlu’s (2013, 194) dual challenge to avoid “subsuming” the content of religious beliefs and identities while also prioritizing “a fuller incorporation” of a “meso-level” of analysis, including elite attempts at stoking religious nationalism. Moving forward, we draw on existing research to highlight three candidate mechanisms likely to play this role, and thus strengthen the relationship between religious ideology and support for violence: perceived victimhood, reinforcing racial and religious identity, and immersion in conspiratorial information networks.Footnote 25

Religious Nationalism, Violence and Elite Cues: Victimhood, Racial Identity, and Conspiracism

Our theory relies on both top-down and bottom-up factors to explain support for political violence. Some individuals believe the government ought to cater more to Christians but are unlikely to be moved to violence in the absence of elite-driven rhetoric urging mass action (indeed, this would more accurately describe “lone wolf” terrorist plots than mass action like that which occurred on January 6, 2021). Similarly, if political elites called for action in the streets, but feelings of Christian nationalism were not present, we doubt many would feel passionately enough to heed the call. Thus, both Christian nationalism and inflammatory elite discourse are necessary, but individually insufficient, ingredients for supporting mass violence. Indeed, research indicates that popular support for religious involvement in politics is far from uniform (Buckley, 2016; Djupe & Calfano, 2014). We theorize that attention should fall on factors likely to be cued by elites that strengthen the tie between religious ideology and support for violence. In this light, we turn to three factors grounded in recent research: perceived victimhood, racial and religious identity, and conspiracism. Each relates to an intersection of threat perception and boundary drawing that has been shown to increase the effect of elite cues, including explicit calls for violence. We expect each to activate the link between Christian nationalism and violence via the effect of elite cues that highlight selective victimhood, waning power for certain identity groups, or nefarious plots perpetrated by other elites.

First, scholars have long pointed to the role of perceived victimhood in increasing support for political violence (Gurr 1970). Conceptually, victimhood may take many forms, such as an egocentric form where one internalizes feelings of victimhood or a systemic one that blames system-level forces (Armaly & Enders, Forthcoming). In theorizing links between religious nationalism and support for violence, there is reason to suspect that victimhood, of either variant, would work in the same direction to strengthen that association. For example, systemic victimhood resonates with extensive social psychological research on “chosen trauma” in the study of group identity, whereby “[participants] feel that [their] side is under personal attack and are compelled to defend their large group” (Volkan 2001, 87). Egocentric forms of victimhood have demonstrated similar ties, with Victoroff, Adelman et al. (2012) finding that experiences of individual discrimination correlate strongly with support for suicide bombing. Ginges (1997, 170) highlights the role of being “outside of, alienated from, society” in motivating terrorist behavior, while Knutson (1984, 293) similarly foregrounds “feelings of rage and hopelessness engendered by the belief that society permits no other access.” Importantly, we describe victimhood that is perceptual in nature. No meaningful suppression of Christianity or the individual’s life prospects needs to have occurred for individuals to feel like victims and bring those feelings to bear on their attitudes about the appropriate use of violence.

We not only expect higher levels of perceived victimhood to relate to support for violence, but also hypothesize that victimhood will enhance the links between Christian Nationalism and support for political violence because of its role in increasing receptiveness to elite cues. Scholars of religion and terrorist violence have repeatedly found that the perception of Islam being under threat correlates with increased support for terrorist elites claiming to represent Islam (Fair & Shepherd, 2006, Bueno De Mesquita 2007, Obaidi, Kunst et al. 2018). Terrorist elites have demonstrated an awareness of this link between religion, perceived victimhood, and receptivity to their cues, flaunting prison experiences as a “credential” when attempting to build their audiences (Nielsen, 2017, 163). As Armaly and Enders (Forthcoming) show using an experimental design, feelings of victimhood can be inflamed vis-à-vis victim-cueing elite rhetoric from the likes of Donald Trump and Joe Biden. A combination of victim-cueing, partisan, and violent rhetoric––like that supplied by Trump during his “Save America” rally before the Capitol riot––is presumably capable of raising political tensions to a point that malignant attitudes translate into destructive behavior, at least for some. We expect that one who believes strongly that there should be increased congruence between Christian life and American governance and who also feels like a victim to be the most supportive of political violence. That is, we expect a conditional relationship, whereby higher levels of victimhood increase the effect of Christian nationalism on support for violence.

Second, we consider the role of white identity (Jardina 2019), which describes the centrality of whiteness to one’s (racial) identity and the perceived connection between the fortunes of white Americans. White identity is powerfully associated with several racial grievances (Jardina 2019). A number of groups that espouse white supremacy, such as the Proud Boys, were prominent in the January 6 riots. In this instance, racial and religious identity would reinforce one another, which resonates with broader findings in the study of religion and political violence. There is a long history of attention to reinforcing cleavage structures leading to “unstable and weak” democracy (Lipset, 1959, 97) while cross-cutting ties raise the possibility of mitigating local political violence (Varshney, 2002). Cross-national statistical analysis from Selway (2011) demonstrates that reinforcing social identities operate distinctly from treating race, religion, or linguistic identity in isolation. Those strongly guided by racial and religious identities also view political and economic competition as zero-sum, and fear a future where they wield less political influence as non-whites gain more. Thus, it is sensible that those high in white identity would be more likely to support violence as a viable solution to uphold the status quo that maintains their group’s social and economic influence.

We further hypothesize that white identity should strengthen the link between Christian nationalism and support for violence, because of white identity’s susceptibility to inflammation vis-à-vis elite cues. Christian nationalism is overwhelmingly a white phenomenon and, as Baker et al. (2020) show, those high in Christian nationalism fear racial and ethnic “outsiders.” Perry et al., (2020a, 2020b) demonstrate that Christian nationalism’s effects are contingent on racial identification in certain scenarios, although they do not collect data allowing them to test the conditional role of the strength of racial identities. Experimental findings from Dunning and Harrison (2010) demonstrate the role of reinforcing social identities in conditioning the effect of elite cues, with cross-cutting identity cleavages undermining popular responsiveness to potentially divisive rhetoric. This is precisely the link between bottom-up identity and top-down cue-giving that grounds our expectations about the role of white identity in strengthening the link between Christian nationalism and violence. The reinforcing nature of religion and racial identity in fueling contemporary political violence may be best captured by Barkun (1997), who identifies the interweaving of Christianity and racial identity in the late-twentieth century “Christian identity” movement. All told, should an individual exhibit strong white identity, we expect a stronger link between Christian nationalism and support for political violence at the Capitol.

Finally, we expect that conspiratorial thinking––operationalized through support for the QAnon movement, in this context––should both increase support for violence in isolation and condition the strength of the relationship between Christian nationalism and support for political violence. Both conspiratorial thinking (Uscinski et al. Forthcoming), the general predisposition to interpret salient events and circumstances as the product of conspiracies, and support for the QAnon movement (Enders et al. ND) are related to support for political violence in general. Generally speaking, the more conspiratorial one is––the more likely they are to see nefarious individuals and groups as unfairly taking advantage of others or subverting norms and laws for their own selfish purposes––the more likely they will be to respond to (perceived) conspiratorial actions with similarly non-normative actions like violence. There is ample evidence linking religion and conspiracy in research in the American context (e.g., Barkun 1996, Oliver & Wood, 2014). Vrzal (2020, 45) characterizes QAnon as “a variation of a Satanic conspiracy theory,” and QAnon lore makes great use of millenarian Christian themes and imagery, such as final battle between good and evil called “the Storm” (akin to the battle tied to the Second Coming of Christ), from which “ten days of darkness” (similar to the “Three Days of Darkness” eschatological belief) would follow.

Because of the elite cues associated with conspiratorial information sources, we expect QAnon support to strengthen ties between Christian nationalism and support for political violence. The links between conspiratorial information sources and elite cues that blend religious and political content are well documented (Barkun 1996, Uscinski et al., 2016). While QAnon “lacks both a clear organizational structure and a centralization of interpretive duties,” this does not mean that it lacks for elite-based cues (Amarasingam & Argentino, 2020, 37). Cues from “less legitimate media” correlate with conspiracy belief (Stempel et al., 2007, 353), and experimental exposure to conspiratorial cues can “increase reported intentions to employ non-normative, illegal means of political articulation” (Imhoff et al., 2021, 71). Cues from prominent Q-supporters were central to planning and carrying out the January 6th violence. Given the religious content and cues associated with such conspiratorial information sources, we expect that support for the QAnon movement would strengthen the relationship between Christian nationalism and political violence in the U.S.

In sum, we expect the relationship between Christian nationalism and support for political violence to be conditioned by individual characteristics that extant research shows can be manipulated by elite cues. Perceived victimhood, reinforcing racial and religious identity, and immersion in conspiratorial information sources should all strengthen the link between the beliefs associated with Christian nationalism and support for political violence like that seen in January 2021 at the U.S. Capitol. Again, this is consistent with both academic and policy work indicating that religious belief, in isolation, is an incomplete explanation of political violence. Rather, beliefs must be combined with other characteristics that elites can inflame to produce violence.

Data and Measurement

To test our theory, we used Lucid to field an original survey on 1100 U.S. adults in February 2021. While ours is not a probability sample, it is constructed such that it is largely representative of the U.S. adult population based on age, race, education, and sex; see the Online appendix for a comparison of these characteristics between our sample and the 2010 U.S. Census. Moreover, a recent investigation by Coppock and McClellan (2019) found that Lucid samples perform well in recovering political attitudes of the U.S. population. We undertook two additional steps to ensure the quality of our data. First, we required respondents to pass two attention checks; if they did not pass either one, they were not allowed to complete the survey. Second, we removed all respondents who sped through the survey; more specifically, if respondents spent less than 7 minFootnote 26 on the survey, which was designed to take 15 min, they were removed from the sample. After taking these steps and restricting our sample to white respondents only,Footnote 27 the final sample size is 817.

We employ two dependent variables. The first is participants’ response, using a five-point scale ranging from “strongly disagree” (1) to “strongly agree” (5), to the following statement: “The riots at the U.S. Capitol building on January 6th were justified.” The distribution of responses appears in panel A of Fig. 1. Approximately 14% of respondents “agree” or “strongly agree” that the Capitol riot was justified, 13% are neutral, and 72% “disagree” or “strongly” disagree. There is a weak correlation between this attitude and partisanship (r = 0.114, p = 0.001), and the correlation with ideological self-identifications is not statistically significant (r = 0.047, p = 0.210). As we might expect given both the immediate (“Save America” rally) and broader (2020 election) context of the Capitol riot, the correlation with support for Donald Trump––as assessed by a 101-point feeling thermometer––is much greater (r = 0.363, p < 0.001).

Fig. 1
figure 1

Distribution of attitudes about the U.S. Capitol riots and political violence

Our second dependent variable is a summated scale of responses to the following three questions about support for political violence (M = 1.86, SD = 1.09, α = 0.87), each of which respondents reacted to using a five-point set of responses ranging from “strongly disagree” (1) to “strongly agree” (5): (1) It is acceptable to use violence in advancing political goals these days, (2) Violence is sometimes an acceptable way for Americans to express their disagreement with the government, and (3) Violence is justified if the members of the other side act violently first.

The distribution of the violence scale appears in panel B of Fig. 1. Approximately 13% of respondents agree more than they disagree with the use of political violence and 8% are completely neutral. As with the attitudes about the Capitol riot, the modal scale value is 1, which corresponds with strong disagreement with each of the three statements; this characterizes 45% of respondents. These figures all comport nicely with those reported in other work on support for political violence that employ similar measurement strategies (Jolley & Paterson, 2020; Kalmoe, 2014). The correlation between attitudes about the Capitol riot and the violence scale is 0.74 (p < 0.001).

We employ four central independent variables. Christian nationalism is measured via a summated scale of responses to six items developed by Whitehead et al., (2018a, 2018b). Respondents are asked to react, using five-point scales ranging from “strongly disagree” (1) to “strongly agree” (5), to statements such as “the federal government should declare the United States a Christian nation” and “the success of the United States is part of God’s plan”; see the online appendix for all questions. The scale is statistically reliable (M = 3.05, SD = 1.06, α = 0.86) and positively correlated with attitudes about the Capitol riot (r = 0.345, p < 0.001) and the use of political violence (r = 0.239, p < 0.001) more generally. We also find that Christian nationalism is significantly higher among evangelicals than other (non)religious groups (p < 0.05), and higher among conservatives and Republicans than Democrats, liberals, Independents, or moderates (all p < 0.05). Additional details about who exhibits Christian nationalist beliefs appear in the Online supplemental appendix.

White identity is measured via a summated scale of responses to four items developed by Jardina (2019). Respondents are asked to react, using five-point scales ranging from “strongly disagree” (1) to “strongly agree” (5), to statements such as “it is important that whites work together to change laws that are unfair to whites” and “whites in this country have a lot in common with one another”; see the online appendix for all questions. The scale is statistically reliable (M = 3.28, SD = 0.95, α = 0.81) and positively correlated with attitudes about the Capitol riot (r = 0.346, p < 0.001) and the use of political violence (r = 0.298, p < 0.001).

Our measure of perceived victimhood is adapted from Armaly and Enders (Forthcoming). Respondents are asked to react, using five-point scales ranging from “strongly disagree” (1) to “strongly agree” (5), to statements such as “the world is out to get me” and “I rarely get what I deserve in life”; see the online appendix for all questions. Whereas Armaly and Enders (Forthcoming) make a distinction between systemic and egocentric victimhood, we combine both variants of perceived victimhood into a single scale (M = 2.63, SD = 0.96, α = 0.90), as we have no prediction about how either form should operate differently than the other when it comes to support for violence or Christian nationalism. And, indeed, all results presented below replicate using the two subscales, instead of the combination that we employ. Like Christian nationalism and white identity, perceived victimhood is positively correlated with attitudes about the Capitol riot (r = 0.358, p < 0.001) and the use of political violence (r = 0.439, p < 0.001).

Finally, we examine support for the QAnon movement. First, respondents are asked whether they have heard of QAnon; 64% of white respondents report having heard of it. Such respondents are then asked, “Do you support the QAnon movement?” Approximately 13% “support” or “strongly support” the QAnon movement (8% of all whites, including those who have not heard of QAnon), 27% are neutral (17% of all whites), and 60% “oppose” or “strongly oppose” the movement (39% of all whites). Support for the QAnon movement is more strongly correlated with support for the Capitol riot (r = 0.671, p < 0.001) and the use of political violence (r = 0.637, p < 0.001) than any of the other explanatory variables we consider. In the models accounting for QAnon support below, we only consider the 64% of white respondents who have heard of QAnon.

In addition to these variables, all multivariate models presented below control for partisanship, political ideology, income, education, age, gender, identification as Latinx, and residence in the political South.Footnote 28 In order to decipher potential differences between Christian nationalism and religiosity more generally, we also control for affiliation with discrete religious denominations, as well as a measure of religious behavior based on the frequency of one’s attendance of religious services (a five-point measure ranging from “never” to “every week”).Footnote 29 Details about question wording and coding for each of these variables appear in the appendix.

Empirical Analysis

We have already established that each of our independent variables of interest is significantly positively correlated with support for the Capitol riot and political violence more generally. Next, we examine these relationships in the context of regression models, controlling for the other factors outlined above. We begin by specifying a series of three additive models for each of the two dependent variables. The first model includes controls plus measures of religious affiliation, such as evangelicalism, and religious behavior.Footnote 30 This baseline model allows us to understand the relationship between support for political violence and both religious affiliation and behavior, as well as subsequently compare these relationships with that exhibited by Christian nationalism. Our expectation is that, while religious behavior may be a proxy for orientations like Christian nationalism in the baseline model, the effect should be greatly reduced with the inclusion of Christian nationalism. All models are estimated using ordinary least squares regression,Footnote 31 and all independent variables have been rescaled to range from 0 (minimum value) to 1 (maximum value) to facilitate interpretation of the coefficients.

In the baseline models (1 and 4), presented in Table 1 below, we find no relationship between any Christian religious category and support for violence, though we do observe positive, statistically significant relationships for religious behavior. In the second set of models (2 and 5), we build on the baseline models by including Christian nationalism, perceived victimhood, and white identity. In the third set of models (3 and 6), we additionally include support for QAnon. This variable was not included in the second set of models because the sample size is non-trivially attenuated by its inclusion––we lose respondents who have not heard of QAnon, approximately a third of the sample. Thus, while we include Christian nationalism, white identity, and perceived victimhood in the QAnon models, we also opted to present models that did not include support for QAnon.

Table 1 Additive OLS regressions of attitudes about the Capitol riot and general use of political violence

First, we test the relationship in isolation between our independent variables of interest (Christian nationalism, victimhood, white identity, and conspiratorial beliefs) and support for political violence. Moving to models 2–3 and 5–6 in Table 1, we observe positive, significant relationships between both dependent variables and all independent variables of interest: Christian nationalism, perceived victimhood, white identity, and QAnon support.Footnote 32

In order to better understand these relationships, we plot model-predicted attitudes about violence across the range of each independent variable of interest in Fig. 2. Christian nationalism, white identity, perceived victimhood and QAnon support all exhibit substantively similar relationships with attitudes about the Capitol riot. Individuals exhibiting the lowest levels of each of these characteristics fall somewhere between “strongly disagree” (1) and “disagree” (2), holding other variables constant. At the highest levels, individuals tend to fall somewhere between “disagree” (2) and “neither agree, nor disagree” (3). Relationships are slightly more variable when it comes to a more general support for political violence, though the same rough pattern emerges. Christian nationalism displays the weakest relationship of the four––perhaps the reason for the violence is more important for Christian nationalists than those who exhibit high levels of white identity, perceived victimhood, or support for the QAnon movement.

Fig. 2
figure 2

Predicted attitudes about the Capitol riot and political violence across the range of each independent variable. Control variables held at their mean value. Shaded regions represent 95% confidence intervals

Conditional Effects of Christian Nationalism

Next, we specify interactive models whereby Christian nationalism is interacted with perceived victimhood, white identity, and QAnon support.Footnote 33 Our theory holds that the strength of the relationship between Christian nationalism and support for violence––in the case of the Capitol riot and more abstractly––is conditional on the strength of one’s identification with the white race, the extent to which one feels like a victim, and strength of QAnon support. Thus, all multiplicative terms across the interactive models––simplified versions of which appear in Table 2––should be positive.

Table 2 Interactive OLS regressions of attitudes about the Capitol riot and general use of political violence. See online appendix for full results

We observe positive, statistically significant interactions between Christian nationalism and all theoretical conditional factors. To facilitate interpretation of these relationships, we plot the marginal effect of Christian nationalism on support for violence, conditional on perceived victimhood, white identity, and support for QAnon in Fig. 3. When it comes to both attitudes about violence, the marginal effect of Christian nationalism more than triples moving from the lowest to the highest levels of each of the conditional factors.

Fig. 3
figure 3

Marginal effect of Christian nationalism on attitudes about the Capitol riot and political violence, conditional on perceived victimhood, white identity, and support for QAnon. Other independent variables held at their mean value. Shaded regions represent 95% confidence intervals

The results of these analyses prompt several conclusions. The Christian foundations of politically-motivated violence appear to lie in the interaction between a specific variant of Christian ideology, Christian nationalism, with other individual characteristics likely to increase exposure to elite cues. While Christian nationalism is strongly related to support for specific and abstract political violence on its own, it appears to be most potent when combined with other individual characteristics. Indeed, the combination of Christian nationalism with white identity, feelings of victimhood, and conspiratorial information sources may produce violent action, or at least support for it, where religious belief may not do so absent those other conditions. As Christian nationalism, perceived victimhood, and white identity are all positively correlated, this toxic blend strikes us as an empirical reality rather than a hypothetical. A similar warning note applies to other religious characteristics. While religious affiliation and attendance are not strong statistical predictors once Christian nationalism is included in multivariate analysis, several of those measures are highly correlated with Christian nationalist beliefs, indicating the interplay between religious nationalist belief and other dimensions of religiosity.

Discussion and Implications

The evidence we present is consistent with two conclusions. First, Christian nationalism in the United States is associated with increased support for political violence like that seen at the U.S. Capitol in January 2021. More broadly, however, religious ideology’s effect on support for violence is essentially conditional. At low levels of white identity, perceived victimhood, and QAnon support, Christian nationalism was not a particularly influential predictor of support for violence. This suggests that attention to Christian nationalism should be contextualized rather than treated in isolation. Scholars of religion and political violence have generally moved to study religious ideology’s conditional effect, and our findings suggest that such a move will be fruitful as the study of Christian nationalism develops beyond its incredibly successful initial stages.

The conditional nature of these effects should not be misunderstood to minimize the extent of the risks associated with Christian nationalism. While support for the Capitol attacks is a minority position among any slice of the American religious landscape, the combination of characteristics most closely linked to support for violence occurs regularly. 6% of whites in our sample, 11.5% of white evangelicals, and 17.7% of white weekly church goers fall into the joint top quartile of justification of violence, Christian nationalist beliefs, perceived victimhood, white identity, and support for QAnon. 17.7% of white Americans who regularly attend religious services would represent millions of individuals. It also represents a far greater share of the white American population than surveys find when testing Muslim-American support for terrorism.Footnote 34

While this is not a piece of policy analysis, our findings do come with implications for governmental efforts to confront domestic extremism, which have received significant attention in the shadow of January 6. First and foremost, these efforts could repeat mistakes of earlier generations of policy designed to counter violent extremism, which tended to focus on religious ideology or beliefs in isolation. The results we present here suggest that efforts to promote “moderate” Christianity are likely to run into similar obstacles to twenty years of limited results from efforts to promote “moderate” Islam or mobilize government resources to win a “war of ideas” within Islam. Instead, religion’s impact on support for extremist violence is likely to be “interactive” (Mandaville & Nozell, 2017, 1). In this case, for example, the strong conditioning effect of support for the QAnon movement suggests the urgent need for increased data collection on the explicit or implicit ways in which conspiratorial disinformation spreads through religious congregations and institutions. Moreover, as victimhood and white identity can be cued and strategically employed by political elites (Armaly and Enders Forthcoming; Jardina 2019), our results suggest attention to the types of messages from political and religious leaders intended to exacerbate the factors that condition the impact of Christian nationalism.

Our findings, drawn from one sample and an observational research design, also provide ample opportunities for further research. First, we theorize, but do not directly observe or test, that the factors enhancing Christian nationalism’s effect on support for violence are tied to changing top-down mechanisms such as the supply of anti-establishment elite cues. Research has documented the ability of elite cues to stoke victimhood, white identity, and conspiracy beliefs, and Christian nationalism itself could well be manipulable in a similar way. Various experimental approaches could probe the mass-level effects of elite communication strategies. Building on recent experimental research (Buckley, 2020; Margolis, 2018), these designs could test which types of individuals are most responsive to Christian nationalist cues, and further investigate the reinforcing nature of cues that blend religious, racial, and even conspiratorial content. A significant body of recent research on clergy influence (Dujpe and Gilbert 2009), including attitudes related to tolerance (Djupe 2015), suggests that clergy influence may be substantial, but also contingent.

Second, these findings raise potentially productive questions about the interplay between Christian nationalism and partisanship. Previous work shows that conspiratorial thinking is not simply reducible to partisan affiliation or liberal-conservative ideology (Enders et al., 2020). And comparative research on terrorism has shown strong support for terrorism among those generally critical of existing political parties (Tessler & Robbins, 2007). With that said, the events of January 6 were undeniably partisan in nature, with a closely contested election at their root. The Jericho March was founded not by established religious leaders, but individuals formerly nominated as Republican political appointees. Focusing on the linkages between elite cues and popular attitudes may present opportunities in this regard, for instance testing messenger effects when cues stoking violence are delivered by partisan sources as opposed to religious authorities.

Finally, our analysis focuses on links between Christian nationalism and one particular form of political behavior: support for contentious protest and political violence. This raises a broader set of questions regarding the interplay between Christian nationalism and political participation. There is an extensive literature focused on religion and political participation, generally focused on the role of religion in building social capital and positive associations with forms of civic involvement (Putnam, 2000; Son & Wilson, 2012). QAnon supporters, however, participate in politics in a more unique and less normatively desirable way, engaging in interactive “research” about the nefarious activities of political elites and rallies to “save the children” from Satanic governmental pedophiles, for example. This raises the prospect of more detailed attention to how the particular set of beliefs conceptualized as Christian nationalism may relate to a broader set of institutional and extra-institutional forms of civic participation and political behavior.

In each of these areas, the core findings about the powerful, conditional effects of Christian nationalism point to broad opportunities for further scholarship advancing our understanding of the interplay between religious ideology and political violence. The events of January 6, while seemingly unique in modern American politics, resonate with broader scholarship on violence, identity, victimhood, and conspiracy that point to likely future challenges to American democracy.