The number of white nationalist, neo-Nazi and anti-government extremist groups across the U.S. fell for a third straight year in 2021, even as some groups were reinvigorated by the Jan. 6 attack on the U.S. Capitol last year and by the ongoing culture wars over the pandemic and school curriculums.

In its annual report, released Wednesday, the Southern Poverty Law Center said it identified 733 active hate groups in 2021, down from the 838 counted in 2020 and the 940 counted in 2019. Hate groups had risen to a historic high of 1,021 in 2018, said the law center, which tracks racism, xenophobia and far right militias.