It boils down to this: They truly believe they are both smarter and more ‘evolved’ then those who disagree with them.
I believe just the opposite. I think deep down liberals have a lot of doubts, a lot of insecurities. Liberals psyche is a bundle of emotion. That’s what liberalism is, emotionalism, but deep down they are afraid all their “emotionalisms” — about race and social justice and the rest of the politically correct blah blah blah — is a sham. Deep down a liberal is afraid that he is a phony. And yet all his life he has been told he is so smart and talented — he has done well in school you see. He graduated on top of his class and gone to top universities, packed to the hilt with his carbon copy elitist professors, where his needy ego has been constantly fed and pampered. Put all this together and the bundle of liberal emotionalism grows arrogant and elitist because he hates anyone that holds a mirror to his face and shows him for what he himself is so fearful that he is... a phony.
Because their whole creed is based on “People shouldn’t be allowed to do that”.
They are control freaks, why? Perhaps problems with their past, insecurity, I don’t know.
But talk to any lib. They get all hyper when they disapprove of what other people are doing, they “shouldn’t be allowed to do that!” smoking on their porch, using plastic bags, etc. And because they know better, and practice better, they become elitist snobs.