There are more factions than that. I was recently researching Huey Newton and realized he was straight up snuffed by the BGF, shot in the face with no apologies. Just when you think you have the most hard core guys out there, nope, there is another group even more hard core than that...
These guys doing the shootings though, are not aligned with BGF. They are self motivated lone wolves, but they definitely are feeding on and motivated by the rhetoric that is out there.