You make the mistake of presuming that anyone who sees through Bernie's facade is a Trump supporter or a Republican. If anything, his antics help Trump with blue collar Union workers who have rejected socialism, since the days of the New Deal.
No, I made no mistake. Anyone who attacks a guy for acknowledging a union and working with them and that's the best they can do for criticism is an asshole. It just seems like all trump supporters and republcians are assholes.