Feb. 21, 2013 USA Today
More than 900 people died in mass shootings during the past seven years, and a majority of them were killed by people they knew, according to a USA TODAY analysis of gun-related slayings.
The 934 deaths account for less than 1% of all gun-related homicides, and nearly half involve a suspect slaying his or her family members, the detailed examination shows. USA TODAY combed through FBI records and news accounts to identify 146 mass shootings since 2006 that matched the FBI definition of mass shooting, where four or more people were killed.
A separate analysis of 56 mass shootings since 2009 provided to USA TODAY by a group of mayors promoting gun control reaches similar conclusions. More than half – 57% – of cases examined by Mayors Against Illegal Guns involved domestic violence. The group, co-founded by New York City Mayor Michael Bloomberg, is made up of more than 850 U.S. mayors.