Laws in all 50 states permitting people to carry concealed firearms in public have been connected to a rise in violent crimes, according to a new report from researchers at Stanford and Johns Hopkins universities.
The report, published in September and issued as a National Bureau of Economic Research Working Paper last week, adds to a series of studies over the last decade tending to discredit the "more guns, less crime" hypothesis, which argues that right-to-carry laws serve as crime deterrents by allowing ordinary Americans to better protect themselves.
The new findings suggest that right-to-carry laws are "associated with substantially higher rates" of aggravated assault, rape and robbery, Stanford law professor John J. Donohue III, one of the study’s three authors, explained in a press release on Friday. Stanford law student Abhay Aneja and Johns Hopkins doctoral student Alexandria Zhang co-authored the report.
Among violent crimes, the most significant increase came in aggravated assault, which may have risen by nearly 33 percent, according to the report. The researchers also found that from 1999 to 2010, murder rates rose in eight states that adopted right-to-carry laws.