Well I thinks so. For the black gangs.
You have to many thnigs that can make a feud. The bloods vs crips thing, the somali gangs and jamaican gangs, the east and west beef over downtown, the black gangs that are affiliated with biker gangs and those that are not, the arrests of gangs that were affiliated with the Shower Posse.

Look like thairs many causes for thoses different wars