raydan raydan:
The Republicans are really trying to distance themselves from this one... but I guess that both sides are doing this.
PTSD would be my bet.

If people have PTSD and become violent they were likely violent before they got it.
$1:
Most military personnel who experience horrendous traumatic events during combat do not come home and kill civilians. In fact, their more likely reaction is to withdraw, become anxious, and become fearful of their surroundings. They are far more likely to become avoidant than lash out at others.
https://www.psychologytoday.com/us/blog ... t-behaviorRemember the kid from the 4th Battalion PPCLI in Edmonton?. He got released after a stint in Astan and when he didn't get what he wanted from DVA drove his SUV through the front doors of the admin building and claimed PTSD made him do it. They did a significant number of tests on him and discovered that his problem wasn't that the had PTSD, which he had but, that he was just another self entitled asshole who didn't get what he wanted.
So, if all the interviews they're showing on TV are to be believed Long was a very damaged individual before he even got near the military and had the people who had violent interactions with him before he signed up and even after he was released turned him into authorities like they should have this tragedy might have been averted.
Unfortunately people seem to think that anti social or violent behaviour can be rehabilitated by having the individual in question join the military. Unfortunately that doesn't work anymore. This is the 21st century and even the military has been pussified WRT to discipline to the extent that when you sign up some potential sociopath, he'll likely walk out the door at the end of his enlistment just as fucked up as he went in with the only difference being he'll now have much better weapons discipline.
You can ban guns, you can blame Trump, you can blame the kids, you can blame the kids parents and you can even blame the military. But the fact remains that nothing is going to change till we and the authorities start dealing with the mental health issues these people openly display and for the record mentally disturbed people shouldn't have access to guns.