DENVER, CO - DECEMBER 28: A disabled vehicle, with a flat tire and shattered window, remains at the intersection of 8th Avenue and Zuni Street on December 28, 2021 in Denver, Colorado. The scene was one of many crime scenes left behind after a suspect went on a shooting spree on Monday night that spanned two cities, Lakewood and Denver, and claimed the lives of four people and wounded three people including a Lakewood police officer. (Photo by Helen H. Richardson/MediaNews Group/The Denver Post via Getty Images
  • Since 2014 the U.S. has averaged more than one mass shooting a day, according to data from the Gun Violence Archive.
  • There is no official definition of “mass shooting,” but this database, which the Guardian has translated into an infographic, tracks incidents in which at least four people were shot or killed, not including the shooter. 
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