In reply to Dax H:
I did read of one instance where a trigger warning could have been useful, which was for somebody at uni with pretty acute mental health problems to do with suicide (known to the university/friends), who came across something in a lecture related to suicide, and went through some kind of crisis. Which while not affected to the point of being suicidal, it meant that she became erratic for a time, and was sectioned against her will by well meaning people who were concerned she might harm herself, which she felt caused her more distress etc than if they'd just allowed her to get on with things.
I dare say that's a more exceptional instance but it made me think...
Edit: Mary Beard mentioned talking about the Romans during a lecture, which mentioned slaves raping women, and at the end she had a student come up to say she'd been raped, which left her wondering how far one had to go with trigger warnings and protecting students, if there's any conflict between that and what is good about university, in preparing students for adult life and dealing with topics and ideas which can be challenging...
Post edited at 13:20