News Hate groups declined in 2021 as fringe ideology went mainstream, SPLC reports March 9, 2022March 9, 2022 N'dea Yancey-Bragg, USA TODAY Comments Off on Hate groups declined in 2021 as fringe ideology went mainstream, SPLC reports The Southern Poverty Law Center found hate groups were less active 2021 but partly due to extremist ideas becoming more mainstream.