I read this book last summer so my memory may not exactly be the freshest, but I seem to recall even the authors conceding that what they are writing about does not happen at all colleges; that some colleges have it worse than others, but that it is “spreading.” They use plenty of anecdotes, some of which have been discussed here before (like the Yale Halloween email) and some I had not heard of before reading (the situations at Evergreen and Claremont McKenna).
It is an interesting, though at times very repetitive read that at times did make me grateful I am well past my college years. I was in college during the first wave of “PC culture”, and while transgressions and mistakes and bad behaviors were definitely pointed out and discussed, it was all in a relatively calm manner and people listened to each other. These stories and videos that come out now with students screaming, cursing, making demands,yelling over each other, telling professors and deans to shut up–I don’t get it but I guess it works, because said professors and deans have lost their jobs to the angry mobs.