Their algorithms seem to be looking for the words "black" and "white". I posted a comment to a YT video just today describing my daughter's experiences in high school, the school's recent heavy emphasis on black lives matter (the topic has crept into History, Cooking, Math, and even Chemistry) and the kids, including the few black kids at the school, think it's excessive. The comment disappeared when I refreshed. I reposted (have learned to always cmd-C), and it was taken down again. So I substituted "bite" for white, "back" for black, and this time it stayed up. Ridiculous and counter-productive, in my opinion.