A growing number of violent incidents have been linked to radicalized online subcultures, particularly among young men identifying with involuntary celibacy, or "Incel," ideologies. These groups, marked by resentment toward women, authority figures, and certain social and political groups, have inspired violent attacks with multiple casualties. One such attack occurred on June 22, 2026, in a Montreal neighborhood with a significant Jewish population. The assailant, Seth Hatfield, killed three people, including himself, a police officer, and an Israeli bystander. Hatfield’s manifesto expressed hatred toward women, Zionists, capitalists, and law enforcement.
The influence of true crime media has also extended into more extreme segments of the community, known as the True Crime Community (TCC), where some members glorify mass shooters and serial killers. Recent data indicates rising involvement of young women in violent acts emerging from this space. On December 16, 2024, 15-year-old Natalie Rupnow, active in the TCC and known for sharing antisemitic and racist content on social media, opened fire at the Abundant Life Christian School in Madison, Wisconsin, killing two and injuring six before taking her own life. Authorities have linked her motivations to nihilistic violent extremism.
Efforts to understand and counter these threats often involve monitoring online platforms where such groups congregate. Analysts typically create anonymous profiles to infiltrate chat groups on apps like Telegram and Discord to identify violent intent and emerging narratives. This intelligence feeds into briefings for law enforcement agencies, including the International Association of Chiefs of Police, campus law enforcement, and military insider threat teams, as well as collaboration with social media companies.
Experts highlight the role of artificial intelligence (AI) in shaping young people’s mental health and social experiences. With an increase in loneliness and fewer meaningful interpersonal relationships, many youths turn to AI chatbots for companionship. These AI systems tend to reinforce users' existing beliefs, sometimes exacerbating isolation or violent tendencies. In some cases, AI tools have been misused to facilitate planning violent acts.
Addressing the risks posed by online radicalization requires more than parental controls and content filters, which are seen as increasingly ineffective. Experts recommend “inoculation” strategies—educating young people to recognize manipulative online content and its tactics early on. Open communication between parents and children about their social media habits is also stressed. Some advocacy groups propose delaying access to smartphones and social media until late adolescence, pointing to evidence linking early social media use to increased anxiety, depression, and other mental health issues.
Social media platforms have taken steps to improve enforcement against direct threats and incitement of violence, yet challenges remain. Changes such as Meta’s recent policy revision have resulted in a loosening of hate speech regulations while maintaining standards against explicit violence. Critics argue that subtler forms of hate—such as dehumanizing language, conspiracy theories, and coded or “ironic” expressions of prejudice—persist and contribute to an environment that primes individuals for violent actions.
Organizations combating online antisemitism face particular challenges related to the "antisemitism attention economy," where hateful content generates views and revenue. Experts advocate for increasing the social and professional costs for individuals spreading such content and expanding resources to expose extremist networks both on and offline.
The field of extremist threat research is expanding but carries significant personal risk for practitioners, including harassment and death threats. Professionals emphasize the importance of operational security, such as maintaining anonymity online and using secure communication tools. Despite the challenges, career opportunities exist in law enforcement, social media trust and safety teams, and community security organizations, making it a critical and growing area of expertise in online safety and counterterrorism efforts.