A dramatic spike in the number of Americans with permits to carry concealed weapons coincides with an equally stark drop in violent crime, according to a new study, which Second Amendment advocates say makes the case that more guns can mean safer streets.
The study by the Crime Prevention Research Center found that 11.1 million Americans now have permits to carry concealed weapons, up from 4.5 million in 2007. The 146 percent increase has come even as both murder and violent crime rates have dropped by 22 percent.
Between 2007 and the preliminary estimates for 2013, murder rates have fallen from 5.6 to 4.4 per 100,000.