Diversity, Inclusion and Anti-Excellence

This is not really true. Hate speech usually has the pragmatic effect of curtailing the target's freedom of speech.

As an extreme example, if I encounter a group of people wearing Nazi regalia, chanting "blood and soil" and carrying guns, I'm not going to say or do anything that makes me legible as Jewish. Similarly, if Milo Yiannopoulos is speaking at my school and people who are trans tend to get harassed after, trans people will think twice before being visibly trans.

Resisting social repercussions for speech like this doesn't uphold the principle of free speech. It just shifts the beneficiaries from marginalized groups to those who target them.