That is a good answer, and things like that are true with life some kid is going too have to have some fucked up mindset to go and do things like they see in the video game. They aren't going to put in GTA:VC then the next day just go out and kill someone.
Whatever was messed up with them was there before the video game and blaming shit like that on the industry is some what negligent in my opinion. But there is always someone going too point the finger.

Counter-Argument: If a little kid was raised from a toddler and up with this type of material always in front of them they may assume it is ok too do shit like that. But in my view that is all the parents fault....