A Guide to Mass Shootings in America
There have been at least 62 in the last 30 years—and most of the killers got their guns legally.
It is perhaps too easy to forget how many times this has happened. The horrific mass murder at a movie theater in Colorado on July 20, another at a Sikh temple in Wisconsin on August 5, another at a manufacturer in Minneapolis on September 27—and then the unthinkable nightmare at a Connecticut elementary school on December 14—are the latest in an epidemic of such gun violence over the last three decades. Since 1982, there have been at least 62 mass murders* carried out with firearms across the country, with the killings unfolding in 30 states from Massachusetts to Hawaii. We’ve mapped them below, including details on the shooters’ identities, the types of weapons they used, and the number of victims they injured and killed.
Weapons: Of the 142 guns possessed by the killers, more than three quarters were obtained legally. The arsenal included dozens of assault weapons and semiautomatic handguns. (See charts below.) Just as Jeffrey Weise used a .40-caliber Glock to slaughter students in Red Lake, Minnesota, in 2005, so too did James Holmes, along with an AR-15 assault rifle, when blasting away at his victims in a darkened movie theater. In Newtown, Connecticut, Adam Lanza wielded two handguns and a .223 Bushmaster semiautomatic assault rifle as he massacred 20 school children and six adults.
The killers: Half of the cases involved school or workplace shootings (12 and 19, respectively); the other 31 cases took place in locations including shopping malls, restaurants, government buildings, and military bases. Forty four of the killers were white males. Only one of them was a woman. (See Goleta, Calif., in 2006.) The average age of the killers was 35, though the youngest among them was a mere 11 years old. (See Jonesboro, Ark., in 1998.) A majority were mentally ill—and many displayed signs of it before setting out to kill. Explore the map for further details—we do not consider it to be all-inclusive, but based on the criteria we used to identify mass murders, we believe that we’ve produced the most comprehensive rundown available on this particular type of traumatic violence. (Mass murders represent only a sliver of America’s overall gun violence.) For a timeline listing all the cases on the map, including photos of the killers, jump to page 2.)