Violent games have an effect on kids?

I was reading an article over at Gamasutra. [link]

Basically it discussed the possible validity of the evidence presented for California State Senator Leland Yee's gaming law.

Now, I do not think that video games really have any affect on making minors violent. I think as long as the kids are level headed and don't have other issues that games won't affect them. For those that have issues, video games are a scapegoat for any violent incidents.

What are your thoughts on this issue?