Lukianoff and Haight: The Coddling Of The American Mind:

something strange is happening at America’s colleges and universities. A movement is arising, undirected and driven largely by students, to scrub campuses clean of words, ideas, and subjects that might cause discomfort or give offense.

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I'm not wild about psychologizing the problem in the way L and H do, but I'm glad to hear that they've teamed up on this problem.