Doesn't on you? I don't follow.
No one is trying to define hate speech. Not sure how this is relevant. Hateful speech is obviously debatable, as Milo argues, but all speech has consequences, which Milo is trying to change.
He's a troll saying some pretty shitty things. I've ignored him for the most part, and disagree with violent protests, as does the laws in Berkeley.
Milo complains that he lost access to Twitter and other social networks because of his purposefully inciting rhetoric. The 1st amendment doesn't grant the right to post on Twitter.
You don't believe in violent protest?
Your party didn't listen.