The Yale Problem Begins in High School
I've taught at two colleges and based on my (purely) anecdotal experiences and attention to the climate, I'd say that the number of students and faculty interested in stifling or censoring ideas is small but also very, very noisy. They also have no sense of humor and college administrators as a group have no sense of humor or perspective, and they're chronically worried about accusations of indifference or insensitivity (which are themselves as good as convictions). There is a strong economic and career incentive for administrators to take everything seriously and to keep their heads down as much as possible.Brew this up and one gets a majority of students who are reasonable but a small minority who drive all the discourse.I don't teach at Yale and have never taught at Yale or schools with similar cultures, so I can't speak to the environment there, but William Deresiewicz did, and his book Excellent Sheep: The Miseducation of the American Elite and the Way to a Meaningful Life came out of that and I recommend it. His book A Jane Austen Education (http://jakeseliger.com/tag/a-jane-austen-education-how-six-n...) is also very good, even for someone like me who does not love Jane Austen.Edit: Also, almost all of the censorship calls and nasty behavior / comments came from students on the left. Vox's "I'm a liberal professor, and my liberal students terrify me" (http://www.vox.com/2015/6/3/8706323/college-professor-afraid) is congruent with my experiences.