Very interesting viewpoint. Something like crime rate is incredible hard to link to any specific cause because there are simply so many different factors at play. I have actually read material that suggests that of the people who are prone to violence, the members of that group who was exposed to violence through artificial means actually were less likely to commit those types of acts in real life. I would link it if i could but it was a discussed in a lecture I attended last January. But, if that is true it reiterates the original theory in the article.