- Where there are more guns there is more homicide
- Across high-income nations, more guns = more homicide
- Across states, more guns = more homicide
Second, an article in the Atlantic on Japan's gun-less culture, and its near total absence of homicide:
"Of the world's 23 'rich' countries, the U.S. gun-related murder rate is almost 20 times that of the other 22. With almost one privately owned firearm per person, America's ownership rate is the highest in the world..." ...
"In 2008, the U.S. had over 12 thousand firearm-related homicides. All of Japan experienced only 11, fewer than were killed at the Aurora shooting alone. And that was a big year: 2006 saw an astounding two, and when that number jumped to 22 in 2007, it became a national scandal. By comparison, also in 2008, 587 Americans were killed just by guns that had discharged accidentally."