The short answer: no. If anything, video games give people an outlet for our predisposition toward violence that doesn't involve actual people getting hurt.
The long answer: People are (and always have been) very violent by nature. In recent years, thanks to the networking of the world (internet, the news, etc) people have become much more aware of the violence that has always been taking place in the world. Naturally, assuming that this apparent rise in violence must be attributable to some new influence in our lives, people look to new forms of entertainment and the like, eg: video games.
In short, to those in the world who do believe that video games are making us more violent, I say, "read a history book." There were no video games during the crusades, or the dark ages, yet we still managed to commit horrible atrocities.