A growing share of congressional lawmakers have taken to social media each February to commemorate Black History Month, according to a Pew Research Center analysis of their Facebook and Twitter activity. Nearly two-in-three members of Congress mentioned Black History Month on Facebook or Twitter in February 2021, up from just 29% in 2015. In every year since 2016, a majority of congressional Democrats have published Facebook or Twitter posts recognizing Black History Month. By contrast, fewer than half of congressional Republicans did this, though that share rose from 29% to 36% between 2020 and 2021.