I said this recently on a different thread, but the Sandy Hook shooter left half empty mags scattered around the school.
To me that is indicative of a video game player, because in most first person shooters(speaking from experience here) when ever you reload, your ammo is magically consolidated into nice full mags. A lot of times you do that in between bits of fighting in game so to ensure a full mag.
Side note: My platoon sergeant was most emphatic that this was a great way to wind up with a bunch of half full mags at a bad time.
That being said, I don't think the fact that the Sandy Hook shooter logged hours of video game time means a damn thing in regards to his actions.
He was clearly deranged. As was Charles Witman, who most decidedly did not have any violent video games to set him off.
NRA Life Member
Ladyfriend: "I need help with the leaves in the yard"
Me: "Controlled burn?"
LadyFriend: "I forgot my Boy Scout turned into an infantry officer."