A small percentage of total gun deaths
People killed in mass shootings make up less than half of 1 percent of the people shot to death in the United States. More than half of gun deaths every year are suicides.
An average of eight people died during each event, often including the shooters.
135 shooters
All but three of the mass shooters were male; the vast majority were age 20 to 49. More than half ? 76 of them ? died at or near the scene of the shooting, often by killing themselves.
274 guns
Shooters brought an average of four weapons to each shooting; the Las Vegas music festival shooter had at least 10. We don?t know how all the guns were acquired, but of the ones we know, 164 were obtained legally and 42 were obtained illegally.
974 victims
Each gun was used to kill an average of four people, not counting shooters. The 974 people came from nearly every imaginable race, religion and socioeconomic background, and 153 were children or teenagers.