[1/2] A police officer sits in their vehicle while responding to a mass shooting at the Club Q gay nightclub in Colorado Springs, Colorado, U.S., November 20, 2022.
- BUFFALO, May 14, 2022 - A white gunman killed 10 Black people inside a supermarket in a racially motivated attack.
- ORLANDO, June 12, 2016 - A gunman fatally shot 49 people at Pulse, a gay nightclub, before he was shot dead by police.
- WASHINGTON, Sept. 16, 2013 - A former Navy reservist working as a government contractor killed 12 people at the Washington Navy Yard.
- AURORA, July 20, 2012 - A masked gunman killed 12 people at a cinema in Aurora, Colorado.