Is it called "Black Friday" because people act like they're rioting?
I don't think that's funny. Is joking about the racism in US society something you think is appropriate?
Jokes like this make people see that racism still exists in US society.
Implying that all black people like to riot is still racist, even when told as a joke, and is hurtful to them. If you are able to see that jokes like that show racism exists, then it would be best not to tell those jokes anymore.
It's just a joke. Calm down.
Even though it was just a joke, when people tell jokes like that, it perpetuates racist stereotypes. How would you feel if someone made offensive jokes about your race? You should be more considerate toward others and tell more wholesome jokes.