I think if you accidentally say something to set someone off, you're not an evil person, but that's not what this article is about. There's a large distance between a social faux pas and forcing a PTSD victim to relive their experience(s).

And yes, many people will have things that set them off, but most of the time you have to intentionally be an asshole to set off important things (for example, jokes about rape, domestic abuse, death in general, etc.). For the vast majority of things, it's pretty difficult to just stumble into--and for almost any situation, a heartfelt apology is literally all that you need to be right as rain in most people's books.

I really, really want to emphasize and be very careful to state that I don't think the educator is at any fault here. I think that Ovid should be taught, if that's what the college chooses. The professor, the university, and the Greek Poet are not crooks because they've delivered this literature to the students, but it would be incredibly considerate if they would all keep in mind that the subject matter is very intense, and to give proper warnings to people who might have good reason to avoid it.