Hey, black people, we'll show solidarity with you, but not about shit that actually matters.
I agree, black people need more substantial support. But I think you aren't for that?
Yes. You see, we already get so much flak from people about being racist so I thought I'd have a little fun with it."
So if someone was tired of people calling them racist, would your advice to them be to act racist? Think that through for a while and you'll understand why black folks don't like that comment.
Why can't I make a joke about racism? It's not like anyone's gonna get hurt by it.
Making racist jokes can desensitize people to the plight certain races suffer from. While you might believe no one would be hurt, blacks and other minorities continues to be hurt by racist views and prejudice. Next time you want to joke in a way that dehumanizes black people, consider how that may influence other's views on them.