Have you ever been unfortunate enough to be seated in a restaurant next to a group of 20 or more "african americans"?
It's impossible to enjoy your meal or carry on normal conversation.
It's always loud. It's always rude. It's always vulgar. It's always nearly unintelligible. "Conversation" is a series of shrieked and shouted verbal assaults complete with over-emoting physically including flailing arms, chairs shoved around, leaping up, head-bob dancing and other mass motions.
I don't like it.