Meh, blaming video games is merely shifting moral culpability away from the parents who are truly responsible when the person is or was a child, or to an psychological state of the person. I find it disturbing and rather lazy to blame video games for poor parenting, or for someone who has a psychological disorder/mentally unsound to begin with. The point is, if the parents were to properly teach their kids the concept of what divides fantasy from reality, instead of sugar-coating the world to their child; then violent video games would not have such influence. Same goes for some who's clearly got psychological issues, and is treated appropriately before letting such influences inspire their behaviour.
The key is understanding real life consequences, and the fact that video games do nothing to show that realistically, so both circumstances are not the same.