Stereotypes exist for all ethnic groups. Always have been, probably always will be. However, I can think of some black criminals that were intelligent enough to make a zillion dollars (most got caught), but they still put together organizations:
Bumpy Johnson. Frank Lucas. Nicky Barnes. Raful Edmund. BMF brothers. The list is long. Different ethnic groups don't like each other because they were raised to think that way, or they are simply ignorant. Racism is stupid.