If the guy is blaming the NRA, guns, ammo or anything else but the asshole and the asshole that raised him, he's an idiot. Grieving or not, there's no excuse to lash out at innocent people to make your political brownie points. That's part of the whole problem with the culture that feeds this crazy shit in the first place.
After every shooting the cycle is completed. Some grieving parent will lash out. Those for gun ownership will lash back. Then after a few weeks everyone simmers down and nothing changes, until the next time.
This is no different. Parents want to prevent harm to their children and will lash out when they fail. It is to be expected and I think just a tad bit of compassion is in order. Calling a grieving parent an asshole is just a tad bit over the line, in my opinion.
Sorry to say it but I think there are just people who do these things in the world and I am not sure anything could be done to stop them. Or maybe I am wrong and there are lots of them and most do get stopped. Don't know but the behavior is so aberrant that I think it a rarity.
Do you think first person shooter games such as COD play any part?