Can you point to some of those actions? I'm having trouble finding any evidence that shows they should be banned.

Now, I think their viewpoints are disgusting too. But their views don't affect people, their actions do.

Have you suddenly lost your ability to create a relevant Google/DDG query?

I can't, for the life of me, understand how you can't find evidence (example of Alt-right figurehead Milo Yiannopoulos):

http://abcnews.go.com/Entertainment/leslie-jones-twitter-tro...

Now, whether he should be banned for what he did is up for contention. But he knows what he did, and he knows how he attacked her.

Yiannopoulos was banned months ago. I'm talking about the current article and the views and actions of those who were freshly banned.