As far as shooters interaction with the law in the past.
No bearing except the shooters prejuidice towards law enforcement.
Making a useless 911 call and still gets his ass beat.
It would be interesting to know of other calls from the nieghborhood watch and the police response.
Basically law enforcement failed to protect the dead victim and the shooter, hence neighborhood watch groups.
The community had 8 robberies in 15 months? I'd say law enforcement failed after the 1st robbery or the 3rd or the 5th or 8th,
c'mon someone isn't doing their job.