While I'll agree that their knowledge is shallow, they actually think they know more than they do, and that is always dangerous. To view yourself as knowledgeable while being incapable of seeing your true ignorance is a recipe for disaster. Finding these people is way too easy, and in fact the media rarely needs to look beyond their own ranks to find them. It is and has been a herd mentality for decades now.
I’m faculty. College kids get their political info from comedy shows/talk shows. They don’t seem to read newspapers or watch the evening news. News is something they watch when something bad is happening.
They hate Trump because they have been told that hating Trump is what they are supposed to do. No other real reason. However, Trump has a following on campus because he is hype. They like hype.