Wow this kinda racist that you say that and this coming from a black person . But black kids sits together because they more comfortable with each other . Nobody else would understand where they coming from or how they feel . Black people understand each other more . That’s why a lot of black kids have more black friends. They also can joke with each other unlike other race. If a black person joke with a non black person they take the joke all the way into racism . Which is why a lot of black people stay with their communities