https://www.scientificamerican.com/article/stop-domestic-terrorism/

In 2015 a white supremacist with a handgun walked into a historic African-American church in Charleston, S.C., and murdered nine worshippers. In 2019 a gunman went on a rampage in El Paso, Tex., and has been charged with 23 murders, as well as hate crimes for targeting Mexicans and immigrants. In June 2020 a man whom prosecutors described as a Ku Klux Klan leader drove his vehicle into a crowd of peaceful Black Lives Matter protesters in Virginia, injuring several. That fall the U.S. Department of Homeland Security drafted warnings saying white supremacist extremists will remain “the most persistent and lethal threat” to the country. Then, on January 6, as Congress met to certify the presidential election, a deadly mob stormed the U.S. Capitol with clothing mocking Nazi death camps; flags celebrating the Confederacy and Donald Trump; and insignia of white supremacist groups such as the Proud Boys and militia groups such as the Oath Keepers.

The number of assaults by white supremacists has been climbing in recent years. The Federal Bureau of Investigation has cited new highs in hate crimes: more than 7,000 in 2019, and that is likely an undercount. The Center for Strategic and International Studies notes in a report that “right-wing extremists perpetrated two thirds of the attacks and plots in the United States in 2019 and over 90 percent between January 1 and May 8, 2020.” Yet most law-enforcement agencies in the U.S. have remained focused on foreign-based “jihadi” terrorism, say experts in national security. Now is the time for the Biden administration and the U.S. Congress to take on the homegrown horror, with several effective initial steps.