Mass attacks in U.S.

The average mass attacker in America is neither an ISIS terrorist nor a high school student with an assault weapon. What these killers did have in common in 2017: they were all men often dealing with symptoms of mental illness, according to a federal agency report. Many of these attacks, 82 percent of which were carried out with guns, left the United States paralyzed last year. The U.S. Secret Service compiled 28 mass attack incidents, defined as onslaughts harming three or more people in public places.