They are actively promoting anger against Trump. They make blanket statements that he is against women, Mexicans,Muslims and immigrants. You don't think that stirs emotions? They do it and they never are taken to task by the media.
They aren't making this **** up. Trump has done that himself and he goes on every news channel he can and doubles down on everything. Then he goes on Twitter and quadruple downs on it too. It's speculation but I'd say that Trump is getting this response all on his own, completely independent from what Clinton and Sanders say, and would be getting this response if nothing was said at all by anybody else.
Has Trump made derogatory statements about women?
Has Trump made derogatory statements about Mexicans?
Has Trump made derogatory statements about Muslims?
Has Trump made derogatory statements about immigrants?
It doesn't matter what Clinton or Sanders say, none of those protests would happen if Trump hadn't said all the things he has said.
Is it football season yet?