I was an instructor for five years (obviously, teaching SQL Server, not literature). But the point is that a good teacher/instructor should be able to teach these books in a way to make it clear that the language is unacceptable.
Unbelievable....
Unfortunately, in this day and age of safe spaces and political correctness, it is not so unbelievable, It is scary. It is yet one more example of the left trying to limit our first amendment rights. We can all have freedom of speech as long as we agree with them....