How many mass shootings have been committed by the far left

Checked on September 22, 2025
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1. Summary of the results

The analyses provided do not offer a clear, definitive number of mass shootings committed by the far left [1] [2] [3] [4] [5] [6] [7] [8]. However, left-wing terrorists have been responsible for a relatively small percentage of deaths in politically motivated terrorist attacks in the United States since 1975, with approximately 2 percent of the total number of people murdered in such attacks [2]. In contrast, right-wing terrorists account for 11 percent of the total, and Islamist ideology accounts for 87 percent [2]. Additionally, right-wing extremist violence has been more frequent and deadly than left-wing violence, with right-wing attacks accounting for approximately 75% to 80% of U.S. domestic terrorism deaths since 2001 [5]. Antifa, a decentralised, leftist movement, has been involved in violent clashes with right-wing groups, but there is no clear evidence to suggest that Antifa is responsible for a significant number of mass shootings [6].

2. Missing context/alternative viewpoints

A key point missing from the original statement is the historical context of political violence in the United States, which has affected both Democrats and Republicans [3]. Furthermore, the definition of "far left" and "mass shootings" is not clearly defined, which could lead to varying interpretations of the data [1] [4]. Alternative viewpoints suggest that radical acts perpetrated by individuals associated with left-wing causes are less likely to be violent [4], and that right-wing extremist violence is more frequent and deadly than left-wing violence [5]. The role of rhetoric and hateful speech in contributing to political violence is also an important consideration [8].

3. Potential misinformation/bias in the original statement

The original statement may be misleading or biased as it implies that the far left is responsible for a significant number of mass shootings, without providing clear evidence or context [1] [7]. President Trump and his supporters may benefit from this framing, as it allows them to shift the focus away from right-wing extremist violence and onto the perceived threat of the far left [1] [7]. On the other hand, left-wing groups and individuals may be unfairly stigmatized by this narrative, which could lead to further polarization and division [6] [8]. Ultimately, a more nuanced and balanced understanding of political violence is necessary, one that takes into account the complexities of the issue and the varying perspectives involved [2] [5].

Want to dive deeper?
What is the definition of far left ideology in the context of mass shootings?
How many mass shootings in the US have been linked to far left extremism since 2020?
What are the common characteristics of far left mass shooters in the United States?
How does the number of far left mass shootings compare to those committed by far right extremists?
What role do social media and online platforms play in promoting far left extremist ideologies?