Blackface has a long, racist history, and it's dishonest to pretend that history doesn't exist. Please educate me on this one: what is the racist history behind the blackface?
It's also dishonest to pretend there's no difference between what Crystal and Murphy do and a bunch of drunk frat boys putting on blackface.
Judging from the article, they did not put a blackfacer: thhey dressed as well-known entertainers that happen to black, hence the completeness of image required the change of skin color, much like in the case of Crystal, of whom you do not disapprove.
Did they do the shoe polish and white lips routine or did they just apply brown make-up and put on sequined gloves. If that's the case, it sounds like harmless fun to me. The guys down in MS who were wearing nooses around their necks are a different story.