Employing Ghislaine Maxwell has to top the list. Changing their community rules definition of hate speech to only be against chosen groups has to count too. But there’s a lot of bad stuff that redditors quietly accepted, forgot, or newer members never heard of.
Ooh yeah. Was that the dude who deleted people’s posts, then reposted them for karma and banned people who called him out?
I believe so. There was also a bunch of abusive moderating and bigotry.