It's related to the kinds of morons who believe they get to police what others do.
Have an opinion that challenges mine? VIOLENCE!
Do something of which I don't approve? YOU DON'T GET TO HAVE AN OPINION BECAUSE YOU'RE XYZ!! SILENCE THIS WHITE SUPREMACIST!!!
The "CULTURAL APPROPRIATION!" yahoos in Portland are directly tied to the shitheads at Evergreen State College who are intimidating and threatening students, staff, faculty, and administration for daring to not wholly endorse their bigoted views.
The "Left" needs to be responsible for excising this sort of cancer from their midst. Unfortunately, if said cancer identifies you as WHITE, you've already lost because you're not allowed an opinion and any opposition is WHITE SUPREMACY and WHITE FRAGILITY.
And woe be you if you're not WHITE. You're simply an uncle Tom with INTERNALIZED ANTI-BLACKNESS, MYSOGINOIR, and a dozen other slanders and libel intended to silence you for daring to disagree.
These lil' Pol Pots would love nothing more than to silence any opposition, yet they fancy themselves the academics and the disagreeing world as the Khmer Rouge.