The data seems to be consistent every time I see it studied. More guns do not make for a safer society. 
www.nber.org
We analyze a sample of 47 major US cities to illuminate the mechanisms that lead Right-to-Carry concealed handgun laws to increase crime.
The altered behavior of permit holders, career criminals, and the police combine to generate 29% and 32% increases in firearm violent crime and firearm robbery respectively.
The increasing firearm violence is facilitated by a massive 35% increase in gun theft, with further crime stimulus flowing from diminished police effectiveness, as reflected in a 13% decline in violent crime clearance rates.
Any crime-inhibiting benefits from increased gun carrying are swamped by the crime-stimulating impacts.
More Guns, More Unintended Consequences: The Effects of Right-to-Carry on Criminal Behavior and Policing in US Cities
Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, and business professionals.
We analyze a sample of 47 major US cities to illuminate the mechanisms that lead Right-to-Carry concealed handgun laws to increase crime.
The altered behavior of permit holders, career criminals, and the police combine to generate 29% and 32% increases in firearm violent crime and firearm robbery respectively.
The increasing firearm violence is facilitated by a massive 35% increase in gun theft, with further crime stimulus flowing from diminished police effectiveness, as reflected in a 13% decline in violent crime clearance rates.
Any crime-inhibiting benefits from increased gun carrying are swamped by the crime-stimulating impacts.
