Since the mentality of the NRA matches that of the MIC and both are in their dominion in this Mars-ruled land, it's possible that authorities turn a blind eye to these periodic massacres so that violence AS state policy need never be honestly scrutinized, and Goddess forbid, tamed.
Secondly, given the "advances" in deregulation that now allow pesticide companies to let it rip, and Monsanto's faux food horrors to "occupy" our foods, and Big Pharma's paid researchers to determine the safety of their chemical cocktails, and so much toxic run-off (including fracking waste and coal slurry) to impact our soil, air, and water... it would appear that a protocol is in place to reduce the human population.
If that is true, then the blatant police brutality aimed at the Black Community may well exist to light the fuse for the same race war that this disturbed young man also hoped to ignite.
It would serve as a pretext for instituting martial law.
There ARE FEMA camps and there ARE lots of tanks in remote locations and there IS a protocol for placing supposedly effete military equipment (come home from foreign wars) on U.S. streets (under the auspices of local police departments full of robo-cops who want to be Arnold Schwarzenegger).
The same twisted minds who are provoking Putin and have smashed at least 5 Arab countries into pieces leaving millions of widows, children, and homeless persons to eke out their survival... are courting the spread of conflict.
They may well WANT a blood bath inside the U.S. And that's where all these guns in the hands of persons who are full of hatred and impossibly ignorant will come into play... to cull the human herd.