Right now, there is a lot of support for candidates who do go out of their way to offend even their most loyal followers. They like the offense, even if it occasionally hurts their own feelings, because it hurts other people more.

Politicians have long understood that it's easier to get elected by being fearful of their opponents than with your own merits. We've just taken the next logical step: actively attacking them, in words and with restrictive actions. It hasn't yet proceeded to violence, for the most part, but that's only because people still haven't gotten bored with this level of harassment.