Chris Rock: I stopped playing colleges because they're so intolerant.

From an interview:

Well, I love Bill, but I stopped playing colleges, and the reason is because they’re way too conservative.

In their political views?

Not in their political views — not like they’re voting Republican — but in their social views and their willingness not to offend anybody. Kids raised on a culture of “We’re not going to keep score in the game because we don’t want anybody to lose.” Or just ignoring race to a fault. You can’t say “the black kid over there.” No, it’s “the guy with the red shoes.” You can’t even be offensive on your way to being inoffensive.

When did you start to notice this?

About eight years ago. Probably a couple of tours ago. It was just like, This is not as much fun as it used to be. I remember talking to George Carlin before he died and him saying the exact same thing

http://www.vulture.com/2014/11/chris-rock-frank-rich-in-conversation.html