It regards to parenting to some point. Sure, videos games do have its moments where they make you want to punch a hole through a wall, but that's only the sensation of frustrastion. On the lines of motivating people to commit murder and crime, it does also have its moment where it can confuse and desensitize people in their morality. What it comes down to, ultimately, is the ability to understand reality from virtual reality. Essentially, if a child, or individual, is unable to determine any sort of contrast, then it bears down to the incapibility of handling such things. Im sure there are worse ways to become influenced to do evil things rather than video games; video games shouldn't be a method of propaganda to viciously beat down someone. Video games were made for entertainment purposes, and essentially, nothing else.
Common sense should make someone realize that just maybe, just maybe, running over someone in a car is probably not a good idea after playing, for example: Grand Theft Auto. It seems that the media wants to blame video games for such acts, but it really just bares down to the lack of common sense and experience. Take, for example, the article that a mother had shaken her infant to death and had blamed FARMVILLE (Yes Farmville) for her motivation...
Need I say more? It's obvious that people like this lack common sense. Blaming farmville, or even a video game, is inexcusable. Ultimately, it is usually just the individual, not a video game. More than likely, a person can become viciously angry and beat their dog after playing monopoly.