I asked Grok "Is more politically oriented violence perpetrated by right wingers or left wingers?" Here's what it said:
Overview
Political violence, including terrorism and ideologically motivated attacks, is rare compared to overall violent crime but has significant societal impacts due to its targeting of symbols, leaders, and communities. Based on comprehensive data from sources like the Center for Strategic and International Studies (CSIS), the Anti-Defamation League (ADL), the University of Maryland’s START consortium, and the Cato Institute, right-wing extremists (e.g., white supremacists, anti-government militias) have perpetrated more incidents and fatalities than left-wing extremists (e.g., anarchists, anti-fascists) in the United States over the past decade, including through 2025. Globally, Islamist extremism often exceeds both in lethality, but between left- and right-wing, right-wing violence is more prevalent and deadly in Western contexts.
