Political correctness was designed to outlaw any descent against the Socialist Revolution.
Hate speech laws would have eliminated the oppositions Constitutional right to speak out and defend their own beliefs.
"Educational" institutions today are a self contained Socialist environment. The students will be lost when they finally enter the real world. They'll be like fish out of water. It won't be about all about them and what they want anymore. They'll face real differences of opinion, something foreign to them.
So why did McCain join in the censorship party with CFR? He, of all politicians ought to be comfortable being censored.