In the United States, domestic extremism has become more complicated, with threats coming from both lone actors and ideological groups. More than 2,200 acts of terrorism and targeted violence took place between 2023 and mid-2025, illustrating the dispersed nature of extreme ideologies. Social media accelerates radicalization through echo chambers and false information, and extremist ideologies—often supported by online platforms—promote violence, hatred, and division. The emergence of “salad bar extremism,” in which people combine many extreme ideologies, makes detection and prevention more difficult. A holistic strategy is emphasized by the National Strategy for Countering Domestic Terrorism, which includes enhancing intelligence sharing, preventing recruitment, halting action, and addressing the underlying causes. There are still implementation gaps, especially in the areas of resource allocation, interagency cooperation, and data gathering. To combat the threat, community resilience, public health-focused measures, and ongoing research are crucial.

https://www.domesticpreparedness.com/articles/the-evolving-landscape-of-domestic-extremism