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Fact check: Who has been responsible for more fatalities as a result of Political violence in the United States over the past 10 years - the Left or the Right?

Checked on September 17, 2025

1. Summary of the results

The question of who has been responsible for more fatalities as a result of political violence in the United States over the past 10 years is complex and multifaceted. According to [1], right-wing terrorists have accounted for 11% of murders, while left-wing terrorists have accounted for 2% [1]. However, [2] indicates that far-right extremists were responsible for the bulk of ideologically motivated deaths, with 227 events taking more than 520 lives, while far-left extremists committed 42 ideologically motivated attacks that took 78 lives [2]. [3] also reports that since 2002, right-wing ideologies have fueled more than 70% of all extremist attacks and domestic terror plots in the U.S. [3]. On the other hand, [4] suggests that liberals are more likely to say that political violence is sometimes justified, but does not provide data on the number of fatalities attributed to the left or right [4]. [5] and [6] report on several instances of political violence in the US, including the fatal shooting of Charlie Kirk, but do not provide a clear breakdown of the ideological affiliations of the perpetrators [5] [6].

  • Key findings:

Right-wing terrorists have accounted for a higher percentage of murders [1]

Far-right extremists have been responsible for the bulk of ideologically motivated deaths [2]

Right-wing ideologies have fueled more than 70% of all extremist attacks and domestic terror plots in the U.S. [3]

Liberals are more likely to say that political violence is sometimes justified [4]

  • Main conclusion: Based on the analyses, it appears that right-wing extremists have been responsible for more fatalities as a result of political violence in the United States over the past 10 years [1] [2] [3].

2. Missing context/alternative viewpoints

Some sources suggest that the threat from politically motivated terrorism is relatively small [1], and that political violence in America rarely follows left-right politics [6]. [7] provides a look at recent acts of political violence in the US, including the killing of Charlie Kirk, the killing of a Democratic state lawmaker and her spouse in Minnesota, and the shooting of another Democratic lawmaker and his spouse [7]. However, the sources do not provide a clear comparison of the number of fatalities attributed to the left and right. [8] finds that radical acts perpetrated by individuals associated with left-wing causes are less likely to be violent, and that right-wing and Islamist extremists are more likely to engage in violent acts [8].

  • Alternative viewpoints:

The threat from politically motivated terrorism is relatively small [1]

Political violence in America rarely follows left-right politics [6]

Radical acts perpetrated by individuals associated with left-wing causes are less likely to be violent [8]

**3. Potential misinformation/bias in the original statement**

The original statement asks who has been responsible for more fatalities as a result of political violence in the United States over the past 10 years, implying a binary left-right divide. However, **[6]** suggests that political violence in America rarely follows left-right politics [6]. Additionally, **[2]** and **[3]** indicate that far-right extremists have been responsible for the bulk of ideologically motivated deaths, which may not be immediately apparent from the original statement.

Potential biases:

Oversimplification of the left-right divide [6]

Lack of context regarding the prevalence of far-right extremism [2] [3]

  • Who benefits from this framing: The original statement may benefit those who seek to downplay the role of far-right extremism in political violence, or those who wish to perpetuate a narrative of equal blame between the left and right [1] [2] [3].
Want to dive deeper?
What are the most notable instances of left-wing violence in the US since 2015?
How many fatalities have been attributed to right-wing extremism in the US between 2015 and 2025?
Which extremist groups have been responsible for the most fatalities in the US over the past decade?
How do law enforcement agencies track and categorize politically motivated violence in the US?
What role has social media played in perpetuating or reducing political violence in the US since 2015?