Isn't it presumptuous to assume that someone holds particular beliefs based solely on his or her skin color? Are there no black conservatives enrolled at UCLA? What happened to George Floyd was graphic & criminal, but not everyone agrees. Not all black people agree, & to be sure, not all black people are traumatized anymore than all white people are blase.
I think the snarky tone of the professor's reply is what got him in trouble. Better if he ignored the request.