People who use the service to plan murders?
People who disagree with your politics?
People who (accurately) quote a book written 200 years ago that uses a word you don't like?
People whose skin color you don't like?
Even the "ban what is illegal by law", aside from some common stuff, varies from country to country. Anything above that is pretty much politics.
Like, it's fair to say "okay, this community is to discuss X, we don't do politics coz that's always divisive", but the moment mods try to play moral guide and decide what's wrong think and what isn't any bias they have will be magnified by the power they have.
People who use the service to plan murders? People who disagree with your politics? People who (accurately) quote a book written 200 years ago that uses a word you don't like? People whose skin color you don't like?