It seems as we get MORE violent video games the violence decreases.
I think of violent video games as a stress reliever, because whenever you get mad at someone or something you just feel like killing people, amirite?
So go play a video game and kill people. Get a few headshots, teabag a few corpses, shotgun a few zombies in the face, etc etc.
My favorite rage-reliever is running through Left 4 Dead/2 with god and inf. ammo chainsaw/shotgun combo on Expert. Just fun.