Most of them are sheltered from the real world
so it isn't too surprising they'd actually believe Marxism could work "if only the right people were in charge" (meaning themselves, of course). Bill Buckley once said something to the effect that he'd rather be governed by people chosen at random from a phone book than by the faculty of Harvard. I think he's right. For people who proclaim themselves "intellectuals" to any and all within earshot, many of them are book smart but real world stupid.