The violent videogames. Yes, they are a contributor.

[justiceischeap]

170. You better keep an eye on me then

I take anti-depressants
I play violent video games, the more violent the better
Oh, except I'm a vegetarian because I can't handle the idea of eating an animal because they have to die for my consumption, I don't own a gun nor will I again because I know there is the possibility that I could harm someone with it...me. Also, I'm squeamish at the site of real blood, so I can't imagine going on a shooting spree because there'd be real blood and if I can't kill an animal for consumption, I can't imagine I'd kill a person.

And if we're going to talk about desensitization then we need to also talk about the nightly news, TV shows like CSI or Law & Order, movies that have any violence in them whatsoever and finally we need to talk about the parents that allow kids to play video games that are rated M for mature (meaning you must be of the appropriate age to buy it for yourself or have a parent buy it for you).

And if we're also going to talk about desensitization, then we need to talk about hunting, cause killing animals over and over could desensitize someone. We need to talk about the Internet because seeing gory pictures online could desensitize people and finally, lets talk about horror or action novels. Shit, lets talk about historical novels that have bloody battles in them. Finally, we really must talk about religion and killing in the name of one's religion because that could desensitize someone or give them the idea that it's okay to kill someone because they aren't a Christian, like for example, witches or the Inquisition.