Cost Of Gun Violence: At Least $12 Billion A Year

Gunshot Wounds Drive Up Government Health Care Costs by Kelly Kennedy.  USA TODAY.  March 5, 2013.  

This article is chock full of statistical information about the costs of gun violence.  For example:  The total cost of gunshot wounds and deaths in 2010 was $153.3 billion.  The total costs per firearm fatality was $5.1 million.  The total costs to the government for each firearm fatality was $582,366.