At least 89% of mass shootings were perpetrated by men
Since 2006, 584 people have committed mass killings with guns
Mass shooters come from a variety of races, ages and backgrounds. But nearly all are male.
By an overwhelming margin, men are the ones who shoot their romantic partners and family members, shoot indiscriminately in public places and carry out mass killings in conjunction with other crimes like robbery and drug trafficking.
Since 2006, only 15 of the 464 deadliest mass shootings in the United States — just three percent — are known or suspected to have been committed by a woman acting alone.
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Another 17 involved both male and female shooters, while an additional 13 killings are unsolved, according to a database maintained by the Associated Press, USA Today and Northeastern University.
The Post defines a mass killing with a gun as a shooting in which at least four people are killed, not counting the shooter.
Age and race of shooters
The median age of shooters and suspected shooters is 31, but the range is large, from 14 years old to 73.
Most shooters and accused shooters are either White (37 percent) or Black (29 percent), followed by Hispanic/Latino (13 percent), Asian/Pacific Islander (5 percent) and Native American (1 percent). The remaining 11 percent are of another race or their race is not available.
Most killers act alone — 84 percent of these deadly mass shootings involved a single assailant. When multiple shooters were involved, the vast majority happened during the commission of another crime, such as a drug deal, robbery or gang fight.
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What happens to mass shooters
Thirty-five percent of shooters died at the scene of the shooting. Of those, 78 percent killed themselves.
Those who survive are almost always caught — just two percent of the shootings in the database remain unsolved.
Most convicted shooters — 62 percent — are sentenced to life in prison. Twenty-four percent receive lesser sentences. Another eight percent are sentenced to death.