Probably best to throw any science under the bus if it's going to get in the way of normal grown ups simulating mass murder.
Let's not "throw science under the bus" at all. In fact, there have been studies[1] which show violent crime decreases as access to violent video games increase.
[1]: http://www.telegraph.co.uk/technology/video-games/8798927/Vi...
The study linked above looks at mid/long term effects on a large-ish cohort in a real world setting.
> The study in the article you link to shows that violence decreases in the short term when a violent block buster is released, because violent individuals are busy playing.
That's right, but I fail to see how that's a flaw in the study?
[1]: http://content.usatoday.com/communities/gamehunters/post/201...