While there is much discussion and hand wringing in Washington on cable news networks about the cause of the recent school shooting in Newton, Connecticut, this Washington Post report actually looks at some data. WaPo compares data from 10 countries related to video game spending versus gun-related homicides. The conclusion? There is no "statistical correlation" between video game spending and gun-related homicides, though the U.S. had more gun-related homicides than any other country within the list.
The article compared the amount of money spent on video games in the U.S., China, Germany, Japan, Australia, Canada, the U.K., France, South Korea and the Netherlands to the average amount of gun-related homicides in those countries. The gun violence data comes from the most recent report from the United Nations Office on Drugs and Crime.
The United States was the worst in terms of gun-related homicides: 3 gun-related murders per 100,000 people annually. The other nine countries analyzed came in at 0.5 murders per 100,000 people or less.
Of course there is some room for argument because the data does not isolate the purchase of violent video games on its own - it lumps in all video game spending across the board. It should also be noted that the United States likely has more gun-related violence because guns laws are less strict than they are in other countries.
The Washington Post report takes a deeper look into the data complete with charts showing how video game spending does not correlate with annual gun-related homicides and how a chart might look like if they did. You can check it out in full here.