Brookings Inst:
Left Wing vs. Right-Wing Political Violence: Comparing the Dangers
There are different ways to measure the danger posed by political extremists, but one of the simplest is to look at the number of people they kill. In the post-9/11 era, on the left, the United States has seen one murder, which occurred when Michael Forest Reinoeh, a left-wing extremist, shot and killed a member of the right-wing extremist organization Patriot Prayer in Portland in 2020. The killer had previously provided “security” for left-wing protests. He described himself as anti-fascist, but he was not a member of any local Antifa group.
Numbers for right-wing extremist violence are far higher, with numerous high-profile terrorist attacks as well as lower-level assaults, vandalism, and other forms of violence. Since the 9/11 terrorist attacks, far-right extremists have killed 130 people in the United States, more than any other political cause, including jihadists.7 Notable attacks in recent years include the 2018 Pittsburgh Synagogue attack, the 2019 El Paso mall killings, and the 2022 Buffalo market attack. A range of far-right extremists, including organized groups such as the Proud Boys and Oath Keepers as well as hundreds of unaffiliated conspiracy theorists, anti-government extremists, and ordinary supporters of President Trump, also stormed the U.S. Capitol on January 6, 2021, in a direct assault on American democracy. Far-right extremist violence has not abated: earlier this month, on May 6, 2023, an apparent neo-Nazi with misogynist leanings shot up a Texas mall, killing eight people.
Another concern is the role of right-wing extremism in the ranks of the military and among police officers. Although the overwhelming majority of law enforcement and military personnel reject extremism, even small numbers of extremists in uniform are of concern given the important role these entities play in American society, including their position at the frontline of the battle against violent extremism itself. Here the difference with left-wing extremism is considerable: many left-wing adherents reject authority, see the police and military as instruments of authoritarianism, and otherwise are far less likely to join their ranks. Many right-wing extremists, in contrast, glorify military and police forces in theory, though in practice they have attacked them. Violent extremist crimes among those with U.S. military backgrounds have increased significantly in the last decade, and such members have played important roles in anti-government extremist groups like the Oath Keepers and disorganized anti-government movements like the Boogaloos.