I taught part-time at UC Irvine for 18 years and I never cancelled a class one time because I was unhappy over world events. When Barack Obama won two elections, I still showed up to teach and never said a word about it. Furthermore, I never bad-mouthed Obama (or Bill Clinton) in class one time.
Unfortunately, we have so many teachers in college who can't be as professional. Last Friday, there was a peaceful but ugly protest at UCI by a few dozen students unhappy over the fact that Donald Trump was being inaugurated. Campus Reform now reports that some professors cancelled classes so students could protest and apparently participated in an ugly display where people displayed signs saying "F--- Amerikkka".
As I said before, those few students do not represent the majority of students at UC Irvine. Nevertheless, it was a disgusting display, which once again has brought a black to the university.