We can always blame the system.........daily criminals are let loose who should not be. Worse we fail to execute those who murder in the first place. Prison for many of the youth today is simply a rite of passage.
I can agree our system is broken and protects criminal behavior when it should not. But in this case the shooter, even if he had been jailed for a few months would have been out in short order and carried out his plan.
Reportedly he repeatedly committed at least one federal crime that carries a five-year sentence.