Many seem to have forgotten that Mark Zuckerberg is an alarmingly unsophisticated thinker about hate speech. In 2018, he objected to banning Holocaust denial, because its proponents weren't "intentionally" wrong--which is about as naive a stance as you can have.
https://www.theguardian.com/technology/2018/jul/18/zuckerberg-facebook-holocaust-deniers-censorship