It's the millennials. They have been brought up in an age where they've been bubble wrapped and taught that mommy and daddy don't think they should ever be held accountable for anything. So they allow their misguided hate to spill onto others and like a weed, it grows. TRump also spreads the hate. And because of who he is, he has his base eating out of his hand.
Disclaimer: I am only responsible for what I say, not what you choose to understand.