I know what all you gun advocates will say to try to tear down this study by a Johns Hopkins researcher, but I'd rather hear from people who are concerned by this.
http://www.bbc.co.uk/news/science-environment-26222578
http://www.bbc.co.uk/news/science-environment-26222578
"That upward trajectory did not happen with homicides that did not involve guns; it did not occur to any neighbouring state; the national trend was doing the opposite it was trending downward; and it was not specific to one or two localities it was, for the most part, state-wide," he told BBC News.
The team said it took account of changes that occurred in policing levels and incarceration rates, trends in burglaries, and statistically controlled for other possible confounding factors such as shifts in unemployment and poverty.
What was stark, added Prof Webster, was the rise in the number of handguns that subsequently found their way into the hands of criminals.
The team counted a doubling of handguns shortly after sale being recovered from scenes of crimes or from criminals.
"This study is compelling confirmation that weaknesses in firearm laws lead to deaths from gun violence," said Prof Webster.