Two sets of stats (in graph form for better comprehension of trends). The first,* an area graph that shows how state gun laws - specifically related to "shall carry" - have eased up over recent years (the puke green), and more restrictive laws that ban it have declined dramatically (in red):
Notice the trend - from 1986 to the present (who was president in 1986?)- toward more and more governments allowing the right of the people to keep and bear arms?
Put that trend up against this one** - violent crime rates in the U.S. - using nearly the same date range:
You can click on either graph to better analyze them.
The point? As gun possession in the public square has become more ubiquitous, violent crimes have declined precipitately.
Causation? Correlation? Happenstance?
Take your pick and argue away. Crime is down. And that's a good thing.
"This year will go down in history. For the first time, a civilized nation has full gun registration. Our streets will be safer, our police more efficient, and the world will follow our lead into the future!"
-- Adolf Hitler, 1935 --
* From "Every Picture Tells A Story."
** From "The State of the USA."