Sources/Statistics for video games/violence debate

[Nieztchean Uber-Amoeba]

I'm afraid my google-fu has degraded in the past few months, and I'm far too lazy to actually sift through several pages of documents to find what I need.

As the title makes clear, I need sources or statistics or anything realted to helping trash the argument that violent video games de-sensitize people to violence or that there is some correlation between them.

I figured this was the best place to put forth my plea.

Any help is appreciated.