This has been a long time coming, as his interviewee Greg Lukianoff explains:
"I always like to put the Buddhist argument for freedom of speech", says Lukianoff. "Buddhists believe life is pain and they have a point. You do someone a tremendous disservice if you teach them that pain in life is a distortion of life. Because as soon as you start seeing hurtful things as being aberrations rather than part of normal human existence, then you start to see robust debate and disagreement as a distortion of the human experience rather than a part of the human experience. When you have students graduating from college believing that it is really, really bad if they have their feelings hurt, you are crippling them, you are preventing them from being able to deal with everyday life and debate."
Or, as Penn Jillette put it in this episode of Bullshit:
Colleges have become Meccas of politically correct bullshit where what you say and maybe even what you think is being controlled by anti-freedom weasles. Colleges and the ideas they're supposed to represent are being crushed like beer cans. Crushed by one word. A word that students are brain-washed into repeating like a hare krishna chant. Diversity.
The video's worth watching, but if you're pushed for time go from 8.25 and watch the berk in the beret.