Risk Profile of Political Violence Offenders. United States vs. the European Union (EU‑27) in 2024 – 2025 (first quarter)

by Andrea Molle in the United States

Recent assessments by security agencies and research institutions reveal a growing convergence in the demographic and geographic profiles of individuals involved in political violence across Western democracies. While the specific ideologies vary—racial and ethnic grievance, as well as anti-government conspiracy theories, are more prevalent in the United States, whereas jihadist and separatist movements continue to dominate in Europe—the underlying offender profile is strikingly similar on both sides of the Atlantic. Typically, the individual is a young man, often in his late teens or twenties, who becomes radicalized online and is drawn to act in areas where media exposure is high or where local grievances create fertile ground for mobilization.

The table that follows draws from the most up-to-date statistics provided by the FBI, the Department of Homeland Security, Europol’s 2025 TE‑SAT report, the START-PIRUS dataset, and spatial analyses based on ACLED event tracking. Together, these sources offer a detailed snapshot of the current threat landscape.

Table 1: Comparative Risk Markers

A clear gender disparity characterizes individuals involved in acts of political violence across both the United States and the European Union. In the U.S., data from the START-PIRUS dataset covering 1990 to 2021 shows that approximately 85% of offenders are male. The trend is even more pronounced in Europe, where Europol’s 2025 TE-SAT report indicates that 91% of juvenile terrorism suspects arrested in 2024 were male. This overwhelming male dominance remains one of the most consistent features across all ideological backgrounds.

Age is another strong indicator. In both regions, the late teens to early thirties represent the most common age range for radicalization and mobilization. In the U.S., nearly 70% of offenders fall between 18 and 34 years old. Similarly, Europol reports that 29% of all terrorism-related arrests in the EU in 2024 involved minors or very young adults between the ages of 12 and 20. These figures highlight the growing vulnerability of younger populations, especially in digital and social media environments.

Racial and ethnic identity also play a major role in shaping offender profiles. In the United States, the FBI classified 52% of domestic violent extremist (DVE) disruptions in fiscal year 2024 as racially or ethnically motivated, with the majority linked to white supremacist ideologies. In the EU, the picture is more mixed: 41% of completed attacks in 2024 were attributed to jihadist actors, while 38% were carried out by ethno-nationalist or separatist groups, particularly in regions with ongoing autonomy conflicts.

Religious ideology, though no longer dominant in the U.S., remains a key driver of lethal attacks in Europe. Jihadist-inspired plots now account for fewer than 7% of DVE cases in the U.S., reflecting a broader shift toward secular or hybrid motivations. In contrast, such plots were responsible for 41% of all fatal terrorist incidents in the EU in 2024, making religion a more consequential factor on the European front.

Finally, political affiliation has emerged as a defining element of recent violent extremism. In the U.S., data from the Center for Strategic and International Studies (CSIS) shows that 49% of incidents since 2016 involved anti-government, sovereign citizen, or highly polarized partisan actors. Meanwhile, in Europe, the most rapidly growing segment of terrorism-related arrests comes from accelerationist and neo-Nazi microcells—small, decentralized groups often operating transnationally and using encrypted communication platforms to coordinate attacks.

Typically, the individual is a young man, often in his late teens or twenties, who becomes radicalized online and is drawn to act in areas where media exposure is high or where local grievances create fertile ground for mobilization.

In the United States, geographic clusters of political violence are not evenly distributed. Spatial analysis based on ACLED event data reveals that California, Texas, Florida, and Georgia lead the country in the total number of recorded incidents. However, when adjusted for population size, the Pacific Northwest—particularly Oregon and Washington—ranks highest in per capita terms. Beyond major metropolitan areas, a a secondary cluster of concern emerges in rural counties with active militia networks, including parts of northern Idaho and eastern Oregon. These regions, though less densely populated, host communities with strong anti-government sentiment and logistical infrastructure capable of supporting extremist activity.

Across the Atlantic, the European Union shows a similarly uneven pattern. Italy recorded the highest number of terrorist attacks in 2024 with 20 incidents, followed by France with 14. Spain and France also topped the charts in terms of total arrests related to political violence. Meanwhile, low-intensity but persistent acts of separatist violence continue in places like Corsica and the Basque Country, where historical grievances and regional identity continue to fuel localized conflict. These areas remain hotspots for ethno-nationalist activity, even as broader attention shifts to transnational threats.

Religious ideology, though no longer dominant in the U.S., remains a key driver of lethal attacks in Europe

A recent statistical overview based on Europol and START InSight’s data, summarized by Claudio Bertolotti in #ReaCT2024 (annual Report on Terrorism and Radicalisation in Europe) confirms the persistent threat of terrorism within Europe. In 2023, there were 43 attacks executed and 33 more prevented, with over 600 individuals arrested across EU member states. France and Austria topped the arrest figures, reflecting both operational intensity and intelligence prioritization. The data also emphasize the enduring challenge posed by ethno-nationalist and separatist groups—especially in France and Spain—alongside residual jihadist threats. Bertolotti’s analysis reinforces the view that radicalization is increasingly driven by hybrid factors, blending ideology with personal and psychological vulnerabilities, particularly among disaffected youth.

While demographic and geographic indicators help identify who and where, understanding how individuals radicalize provides deeper insight into the threat trajectory.

Regardless of ideology, most individuals who engage in political violence tend to follow a similar radicalization pathway. Typically, this begins with a personal crisis—such as emotional distress, social isolation, or financial hardship—that becomes layered with broader conspiracy theories or identity-based grievances. These narratives offer a distorted framework through which the individual begins to make sense of their situation, often blaming institutions, governments, or specific groups. Over time, the search for meaning or belonging leads them into online communities where these views are reinforced. Both the FBI and Europol have flagged social media, gaming platforms, and encrypted messaging apps as key accelerants in this process, especially among younger users. These digital spaces provide not only ideological content but also peer validation, making them fertile ground for recruitment and mobilization.

The likelihood of an individual engaging in political violence varies based on a combination of demographic, geographic, and behavioral factors. The highest-risk profile is a male between the ages of 18 and 34, residing in a politically polarized urban area or a region with active separatist movements. This individual is typically deeply engaged in extremist content online, often through forums, social media, or encrypted apps.

A moderate level of risk is associated with individuals living in rural U.S. counties where militia activity is present. This group often includes people with a prior history of minor violence or domestic abuse, suggesting that a background of interpersonal aggression may be a precursor to political violence under political ideological influences.

Regardless of ideology, most individuals who engage in political violence tend to follow a similar radicalization pathway. Typically, this begins with a personal crisis—such as emotional distress, social isolation, or financial hardship—that becomes layered with broader conspiracy theories or identity-based grievances.

At the lowest end of the risk spectrum are older adults—particularly women over the age of 45—who have no significant online footprint in extremist spaces. This demographic remains substantially underrepresented across all known datasets of politically motivated violence.

To effectively reduce the threat of political violence, prevention strategies must target the most vulnerable groups and high-risk environments. One of the most urgent priorities is early intervention aimed at young males between the ages of 13 and 24, who represent the fastest-growing segment among those radicalized online. Outreach programs that engage these individuals before they become deeply embedded in extremist networks can significantly reduce long-term risk.

One of the most urgent priorities is early intervention aimed at young males between the ages of 13 and 24, who represent the fastest-growing segment among those radicalized online.

At the same time, federal and local fusion centers should align their resource deployment with the geographic clusters identified by ACLED data and academic spatial models. This means focusing efforts not only in major urban centers but also in specific counties where historical or ongoing extremist activity has been recorded.

Importantly, prevention programs should move beyond rigid ideological classifications. Rather than focusing solely on political extremists, jihadist, or separatist threats, interventions should be built around common behavioral patterns—such as personal crises, social isolation, and online radicalization—that transcend ideological boundaries.

Finally, special attention must be given to election cycles. Both the Department of Homeland Security and the Center for Strategic and International Studies have documented consistent spikes in political violence and threat activity during major elections. Surge planning and targeted security measures around these periods are essential for mitigating potential flashpoints.

Estimated Risk to the Public and Strategic Mitigation

While the political violence landscape is evolving and increasingly visible, the actual risk of physical harm to the average citizen remains statistically low in both the United States and the European Union. Based on aggregated datasets from the FBI, DHS, and Europol, the annual likelihood of a civilian being killed in a politically motivated attack is less than 1 in 10 million in most Western countries. For context, this is comparable to the annual odds of being killed by lightning or a domestic gas leak. However, these figures mask important nuances. The perceived threat is far greater in certain high-profile environments—such as government buildings, political rallies, and religious institutions—where attacks are more likely to occur, particularly during periods of heightened political tension or following polarizing events.

Over the last five years, the U.S. has averaged 25–35 documented incidents per year of domestic political violence involving physical harm or lethal intent. In the EU, while the number of successful attacks remains lower, the number of arrests and disrupted plots—over 400 in 2024 alone—indicates significant intent and mobilization potential. The real risk, therefore, is less about mass casualty events and more about the cumulative erosion of public trust, democratic stability, and civic norms.

Prevention programs should move beyond rigid ideological classifications. Rather than focusing solely on political extremists, jihadist, or separatist threats, interventions should be built around common behavioral patterns—such as personal crises, social isolation, and online radicalization—that transcend ideological boundaries.

Three intersecting dynamics heighten risk exposure for specific groups:

• Proximity to symbolic or political institutions (e.g., Capitol buildings, synagogues, embassies)
• Demographic visibility (e.g., targeted religious or racial minorities)
• Participation in high-profile civic activity (e.g., activists, elected officials, journalists)

To mitigate these risks, authorities and communities must adopt a layered, preventive approach. Key strategies include:

• Behavioral Threat Assessment: Training frontline personnel (teachers, social workers, HR managers) to recognize early signs of radicalization and intervene before mobilization.
• Digital Literacy and Counter-Radicalization: Promoting fact-checking skills, online resilience, and reporting mechanisms in youth populations—especially males aged 13–24.
• Community-Based Partnerships: Investing in trusted local actors, including faith leaders and neighborhood organizations, to build relationships and disrupt isolation.
• Election Security Surge Planning: Deploying targeted security resources and disinformation countermeasures during election cycles, which are now consistently associated with spikes in threats.
• Data-Driven Fusion Centers: Expanding the capacity of regional intelligence hubs to share geospatial and behavioral insights in real time between law enforcement and civic institutions.

Ultimately, while political violence is unlikely to touch the average citizen directly, its ripple effects can undermine democratic life if left unchecked. The focus, therefore, should not only be on physical security but also on rebuilding institutional trust and strengthening social resilience.

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