So, wait. You can't say that video games are the cause of this simply because the new consoles were released when crime rates went up. You have the check for other factors. Was there some sort of law change that could cause this? A drastic change in another statistic that might have an effect on crime rates?
You have to take a scientific approach. Everything must be the same, but group A would be before next-gen consoles, and group B would be after. However, there is no doubt in my mind that not everything is EXACTLY the same.
EDIT: AHHHH, this thread was necroed. Dammit. Sorry.