I was thinking the same thing. Roseanne gets *****-canned for comparing Valerie Jarrett's haircut to the Planet of the Apes costumes, Megyn Kelly gets booted for questioning why it's offensive to dress as another race/culture for Halloween, Imus gets canned for referring to nappy hair, but Don Lemon can raise a call to action against white men and it's all good.
It seems the core purpose of the left is to advance the war on whiteness.