I don't think that violent games and movies are the trigger, there is something wrong with the people that commit these crimes. How many millions of kids played these games without ever becoming violent themselves?
You make a good point about millions of kids not becoming violent but it is the same one is made by law abiding gun owners. This is one of the points that gets beaten about in the thread I mentioned.
What is not talked about is whether or not the individuals who commit these heinous acts share other traits in common. While I accept the premise that millions of kids do not have violent outcomes I believe there is a subset that do. It would seem as an armchair analyst that these traits could be developed into a profile which I suspect might come close to the term 'homicidal maniac'. I did hear an interesting comment on Rush the other day but will confess other things were going on so I didn't hear the whole thing. The gist was that
liberals have pretty much emasculated the young white male in society causing some to withdraw inward and toward fantasy shoot em up games for validation paraphrased from what I think I heard. That too could contribute to the rage and dementia these shooters feel.
One last thing. Years ago there was a guy who used a video game to develop shooting skills then went on a rampage or vendetta but I remember little else of it than he was of Asian origin and wore a leather jacket. In any event the point was that he learned to shoot (quite well apparently) using a video game.
Have to go rescue some shirts from the dryer.