This is actually the honest-to-god opinion of EVERY SINGLE Berniebro I've spoken with. Either this, or "I'm voting for Trump because at least he'll blow the whole thing up and we can have a revolution."
You have to remember that the vast majority of Sanders supporters are well-off white people. So they can afford to vote for Trump and not feel the effects of his presidency.
White Sanders/Trump/Cruz supporters: We're so angry! The system is run by a bunch of elites who have rigged everything against us!
People of color: Oh, really?