One of the things I'm a little shocked by is the fact that the Escapist is advancing the point of view that "Videogames cause school shootings." Aside from the fact that it is bringing violence down on the very industry that the magazine is supposed to be promoting as an art form, it's also trivializing these events and papering over the ugly truths behind them. There are so many things I could pick on. The main thing though is that it is far more useful to look at a continuum between workers "Going Postal" and teenagers doing the same. (The thing they usually have in common? Systematic abuse, and a system that not only does nothing to stop it but in fact encourages it.)
I recommend Going Postal, a book that really investigates these tragedies. You may not like his conclusions, but the author at least has researched this... not rushed to blame the nearest convenient scapegoat and then, except for using it as campaign fodder, whitewashing the problem as quickly as possible.
Pardon me for being sensitive about this, having lived through a D&D witchhunt during my High School years, and having been branded a witch because of my chosen hobby, this kind of stuff really bugs me. Yes, people still believe in witches, and being branded a witch might not lead to a burning stake, it can still lead to violence in this modern world.