>but had made tweets like "kill all men".

Personally, I have no problem with people saying things like this, especially in their personal lives. I like banter. But part of banter is that both sides are allowed to play. If someone can express extreme ideas like "kill all men" I should be able to make equally extreme jokes, but in different ideological directions.

What bothers me is not the language, but the unfairness. I can understand not permitting banter at work or in organizations. It makes some people uncomfortable. But what I can't understand is just allowing banter of some ideological bent.