Kasich made a very good point this morning. He noted that all these protests/confrontations at Trump rallies do nothing but give him more attention and strengthen his base. It would be very hard to show this level of self-restraint, but the best thing anybody could do, whether they be move.on, black lives matter, or just random people who hate Trump, to do would be to just stay completely away from his events and try to make them as uneventful as possible.
I've had three friends who do not like Trump and aren't planning on voting for him tell me that they have more sympathy for him after Friday.