@falktx Obesity seems like an unrelated (but a very real) issue.
Do you mean porn being blamed for sex violence? I think criminal behaviors are an entirely different and unrelated problem. School shootings seem to be more an issue of lack of mental health help and how easy it is to get a gun in US (freedom!), not a result of gore in films or games.
Similarly I don't think we can excuse a rapist for his porn addiction (if he has one). I'm talking about more subtle problems it causes.