How many fatalities have been attributed to left-wing violence in the past decade?

Checked on September 29, 2025
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1. Summary of the results

Multiple recent analyses converge on a concise numeric finding: researchers counted about 13 fatalities attributed to left-wing violence over the past decade, with reporting that only two deaths occurred since 2020 before more recent high-profile incidents were reported (Aaron Danielson in 2020 and UnitedHealthcare CEO Brian Thompson in 2024) [1] [2]. Several pieces emphasize that while the number of left-wing attacks rose, their lethality remained low compared with right-wing and jihadist violence (for example, 112 and 82 victims respectively in the same period in one dataset) [2]. Earlier visualizations exist but did not supply decade-specific totals [3] [4].

2. Missing context/alternative viewpoints

The raw fatality count alone omits crucial context that alters interpretation: attack frequency, attempted attacks, injuries, and motive classification protocols. Some sources report rising numbers of left-wing incidents but fewer deaths, suggesting a shift in tactics or target selection [2]. Other datasets and visualizations referenced do not span the full decade or use different definitions of “left-wing” versus “politically motivated” violence, creating comparability problems [3] [4]. Additionally, time windows matter: counts “since 2020” versus “past decade” can produce different trends, and high-profile murders after dataset cutoffs (or reclassifications) can materially change recent-year totals [1].

3. Potential misinformation/bias in the original statement

Framing the question solely as “How many fatalities have been attributed to left-wing violence” can be exploited by actors seeking to minimize broader political violence or to sensationalize a perceived surge. Emphasizing a small fatality number while highlighting attack-count increases favors narratives that portray left-wing actors as numerous but non-lethal, which can either downplay threats or amplify alarm depending on audience intent [1] [2]. Conversely, omitting methodological caveats about classification, dataset cutoffs, and comparative baselines risks misleading readers about relative risk; transparency about definitions and timeframe would reduce bias [3] [4] [2].

Want to dive deeper?
What are the most notable left-wing extremist groups in the US?
How does left-wing violence compare to right-wing violence in terms of fatalities?
What role does social media play in promoting left-wing extremist ideologies?
Have any left-wing extremist groups been designated as terrorist organizations by the US government?
How do law enforcement agencies track and respond to left-wing extremist threats?