According to a recent report from the ADL Center on Extremism (2019), in 2018, 47 of the 50 victims of terror in the U.S. were killed by extremists that had ties to at least one right-wing extremist movement. Three victims were killed by a domestic Islamic terrorist. No deaths were caused by leftist extremists.
Note: Page 28 of the ADL Center on Extremism report referenced below provides notes on the methodology and sources used for the report.
References
(2019). Murder and Extremism in the United States in 2018. ADL Center on Extremism. Retrieved from https://www.adl.org/media/12480/download
