Re: Evidence?
The problem with Twitter is that it relies on people to get followers, and typically the majority of followers share some or all of the viewpoints of the people they follow.
Milo has enough followers that he doesn't need to tell people to "get her" for them to pile in and post some nasty stuff, he can be fairly vague and yet get the same impact as a direct call to action. The key question is more for twitter to get to grips with, and that is how do you deal with overly popular idiots like Milo?
In the interest of balance you can of course look back at some of Leslie Jones tweets which exhibit racism, anti semitism and calls for her followers to "get her" in response to a tweet.
https://twitter.com/Lesdoggg/status/564664734268411906
https://twitter.com/Lesdoggg/status/169003034880376832
https://twitter.com/Lesdoggg/status/564965558408327168
https://twitter.com/Lesdoggg/status/755218642674020352