An evil black guy. Black guys are usually not bad, but some can feel an evil desire to get revenge on whites for white-on-black racism that can land them in jail where they can team up with other black guys to beat white guys up.
White prisoner: I hope I don't get beaten up by a prison black guy
Black prisoner: I'm going to beat you up, racist!
Black prisoner: I'm going to beat you up, racist!
by Alex Spencer Stregger February 14, 2015