When I read about the leak of the new Meta internal guidance for content moderation[1], my first thought was that the only things they banned were likely things that they understood to be pre-genocidal speech (eg comparisons of a group to vermin). Rules that seem kind of arbitrary to a modern western audience but which click in place if you look at propaganda that was issued during historical genocides.
[1] https://theintercept.com/2025/01/09/facebook-instagram-meta-...