profulus – Measuring Political Violence in the United States by Ideological Alignment: Right-Wing Actors Dominate Incidents of Politically Motivated Violence. The Landscape of Domestic Political Violence: “Political violence in the U.S. refers to violent acts motivated by political beliefs, ideologies, or partisan affiliations. These range from hate crimes and extremist attacks to targeted assassinations and large-scale terrorism. Data compiled by government agencies and research institutions show that domestic extremism constitutes an enduring national security concern. Note that these acts have historically emerged from multiple ideological traditions. Left-wing movements produced incidents in the 1960s and 1970s involving radical groups like the Weather Underground. Right-wing violence has shown greater persistence. This has been driven by white supremacists, antigovernment militias, and other extremist factions. Threat assessments from the Federal Bureau of Investigation and Department of Homeland Security highlight that racially-motivated extremists, often associated with far-right ideologies, remain the most lethal domestic threat. These agencies also warn that antigovernment extremists continue to represent a significant and growing source of violence nationwide. The ideological divide in the U.S. is deeply connected to political polarization. Research from the Pew Research Center shows that partisan animosity has reached record levels. Both Republican and Democratic camps hold unfavorable views of the other. This reinforces ideological identity and hardens societal divisions across political, cultural, and religious lines. Polarization also amplifies the appeal of extremist rhetoric and fosters settings where individuals are more likely to support or commit violence against political opponents. Studies note that widespread disinformation, incendiary political discourse, and the growth of online echo chambers have further intensified the willingness of individuals to resort to violence…”