The number of active shooter incidents in the U.S. rose by 52.5% from 2020 to 2021, and over four years, from 2017 to 2021, there was a 96.8% increase, the FBI said in a report published Monday. The ...
Mourners hold candles during a March 2021 vigil in Boulder, Colo., for the victims of a shooting at a King Soopers grocery store. Ten people were killed in that attack. Violent rampages carried out by ...
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