By Katarzyna Jaskoa, Gary LaFree, James Piazzac , and Michael H. Beckerd

Although political violence has been perpetrated on behalf of a wide range of political ideologies, it is unclear whether there are systematic differences between ideologies in the use of violence to pursue a political cause. Prior research on this topic is scarce and mostly restricted to self-reported measures or less extreme forms of political aggression. Moreover, it has generally focused on respondents in Western countries and has been limited to either comparisons of the supporters of left-wing and right-wing causes or examinations of only Islamist extremism. In this research we address these gaps by comparing the use of political violence by left-wing, right-wing, and Islamist extremists in the United States and worldwide using two unique datasets that cover real-world examples of politically motivated, violent behaviors. Across both datasets, we find that radical acts perpetrated by individuals associated with left-wing causes are less likely to be violent. In the United States, we find no difference between the level of violence perpetrated by right-wing and Islamist extremists. However, differences in violence emerge on the global level, with Islamist extremists being more likely than right-wing extremists to engage in more violent acts.

Political violence in the United States has increased in recent years and shows no signs of declining.1 This trend was underscored in September 2025 by the assassination of conservative activist Charlie Kirk at Utah Valley University. In the two weeks before and after Kirk’s killing, shooting incidents in Colorado, Minneapolis, and Dallas seized public attention.2 Executive Summary Amid growing concern about the relationship between online rhetoric and real-world violence, this report examines how violent extremist actors across the ideological spectrum use digital platforms to respond to, amplify, and exploit acts of political violence in the United States. Drawing on opensource intelligence (OSINT) gathered initially from March 24 to June 6, 2025, and then extended to include a period following Kirk’s assassination, this analysis reveals sophisticated cross-platform strategies employed by far-right, far-left, violent Islamist, and nihilistic violent extremist (NVE) actors. This report uses “violent extremist” to refer to individuals who support or commit ideologically motivated violence to further political goals, as well as those who commit violence driven by generalized hatred rather than a coherent ideology. Key Findings • Violent extremist groups systematically exploit trigger events—high-profile incidents of violence—to recruit supporters, justify their ideologies, and call for retaliatory action. • These groups employ multi-platform strategies, using mainstream sites like X for visibility and recruitment while maintaining a presence on private or semi-private platforms for coordination and more extreme content. • Far-right groups capitalized on cases like the Austin Metcalf stabbing and the Iryna Zarutska killing to advance narratives of White victimhood and justify threats against perceived enemies. • Activities of both far-left and far-right networks revealed a troubling convergence around antisemitic targeting. • Violent Islamic groups are more aggressively monitored than domestic groups espousing similar levels of violence. • Violent Islamist groups, facing stricter moderation than domestic extremists, have migrated to decentralized platforms like Rocket.Chat while disseminating symbolic propaganda elsewhere. • Nihilistic Violent Extremist (NVE) communities glorify violence across ideological lines for shock value and digital notoriety, making their threats harder to predict based on political triggers. This report aims to bring clarity to a conversation clouded by vagueness and partisanship. It first maps the domestic threat landscape, offering timely examples of online violent discourse from across the ideological spectrum targeting US individuals or institutions, and sets out a clear definitional framework for types of speech that carry legal significance under US constitutional doctrine. It closes with practical recommendations for online service providers and policymakers.

PNAS 2022 Vol. 119 No. 30 e2122593119

By Abby Córdova and Helen Kras

 With a focus on the implementation of women’s police stations (WPS), we posit that local policies that address violence against women can result in positive feedback effects on institutional legitimacy. We theorize that WPS increase police legitimacy among women by improving perceptions of personal safety and government responsiveness. To test our hypotheses, we rely on municipal and public opinion data from more than 100 municipalities in Brazil. The results of our multilevel analysis indicate that WPS produce positive feedback effects among women, resulting in higher trust in the police among women than men and closing the gender gap in perceptions of police effectiveness. Incorporating an instrumental variable in the analyses yields similar results, suggesting that these effects are not endogenous. Moreover, the results of our mediation models show that WPS’ positive effects on women’s views of police legitimacy are driven by improved perceptions of personal safety, and not perceptions of government responsiveness. 

Comparative Political Studies 2020, Vol. 53(5) 775–808 

By Maureen Murphy , Emily R Smith , Shikha Chandarana , Mary Ellsberg 

This review aims to contribute to the understanding of violence against women and girls in conflict-affected and fragile settings through a systematic review and meta-analysis to document the available evidence on the prevalence of intimate partner violence and non-partner sexual violence during periods of armed conflict and in post-conflict periods. A total of 45 studies were included. Inclusion criteria were: population-based, observational studies that collected quantitative data with women (aged 15 years or older), included prevalence data on intimate partner violence or sexual violence, was collected in a conflict-affected context (active conflict or within 10 years after conflict) and was self-reported by women themselves. PubMed (Medline), PsycINFO, and Scopus were searched, and Demographic and Health Surveys were included for conflict-affected settings. The search covered literature published between January 1990 and August 2023. The results estimate that 39% of women and girls in conflict-affected settings have experienced physical or lifetime IPV, while 24% reported this violence in the past 12 months. For non-partner perpetrated violence, an estimated 21% of women and girls had experienced this violence in their lifetime and 11% reported having this experience during a period of conflict. When looking at sexual violence overall, an estimated 21% had experienced this violence, though there was considerable heterogeneity depending on the source of this data.

Trauma Violence Abuse. 2024 Dec 24:

By : M. Richardson, M. Newman, G. Berry, C. Stansfield, A. Coombe & J. Hodgkinson

• Objective

  To identify and map evaluations of interventions on gang violence using innovative systematic review methods to inform future research needs.

  Methods

  A previous iteration of this map (Hodgkinson et al., (2009). “Reducing gang-related crime: A systematic review of ‘comprehensive’ interventions.”) was updated in 2021/22 with inclusion of evaluations since the original searches in 2006. Innovative automatic searching and screening was used concurrently with a ‘conventional’ strategy that utilised 58 databases and other online resources. Data were presented in an online interactive evidence gap map.

  Results

  Two hundred and forty-eight evaluations were described, including 114 controlled studies, characterised as comprehensive interventions, encompassing more than one distinct type of intervention.

  Conclusion

  This suggests a substantial body of previously unidentified robust evidence on interventions that could be synthesised to inform policy and practice decision-making. Further research is needed to investigate the extent to which using automated methodologies can improve the efficiency and quality of systematic reviews.

•  J Exp Criminol 20, 1125–1146 (2024).

By Kondakov, Alexander Sasha

Violent Affections uncovers techniques of power that work to translate emotions into violence against queer people. Based on an analysis of over 300 criminal cases of anti-queer violence in Russia before and after the introduction of the ‘gay propaganda’ law, the book shows how violent acts are framed in emotional language by perpetrators during their criminal trials. It then utilizes an original methodology of studying ‘legal memes’ and argues that these individual affective states are directly connected to the political violence aimed at queer lives more generally. The main aim of Violent Affections is to explore the social mechanisms and techniques that impact anti-queer violence evidenced in the reviewed cases. Alexander Sasha Kondakov expands upon two sets of interdisciplinary literature – queer theory and affect theory – in order to conceptualize what is referred to as neo-disciplinary power. Taking the empirical observations from Russia as a starting point, he develops an original explanation of how contemporary power relations are changing from those of late modernity as envisioned by Foucault’s Panopticon to neo-disciplinary power relations of a much more fragmented, fluid, and unstructured kind – the Memeticon. The book traces how exactly affections circulate from body to body as a kind of virus and eventually invade the body and respond with violence. This analytic effort draws on the arguments from memetics – the theory of how pieces of information pass on from one body to another as they thrive to survive by continuing to resonate. This work makes the argument truly interdisciplinary.

London: UCL Press, 2022.