Actual blackface of the Minstrel Show variety is rude. It’s a mockery. Great big red lips. Staring white eyes. It’s a caricature and I think it would simply be seen to be in bad taste. Not illegal. Not cause for violence or outrage. Just not funny.
But a white actor simply wearing makeup is not, to my mind, necessarily blackface. Lots of room to be amusing if they do it right. I’ve got no problem with a skit like that and I say screw the people who can’t take a joke.
You have people here that dont even understand that imitating Snookie from Jersey Shore is NOT BLACKFACE