On the Fact that Gun Violence (Including Homicide) Is Actually Down Precipitously In America - this While Gun Ownership and Right to Carry Statutes Are Both Proliferating - http://www.pewsocialtrends.org/2013/05/07/gun-homicide-rate-down-49-since-1993-peak-public-unaware/

So there's an inverse correlation between gun ownership and gun violence. Granted, there could be a third intervening variable which is influencing both but being that we have no plausible explanation (other than more guns equaling more deterrence) as to what that might be, maybe this whole emphasis on the supply side isn't the most productive way to go, I'M JUST SAYING!!