Columbine High School massacre
The Columbine High School massacre, commonly referred to as Columbine, was a school shooting and attempted bombing that occurred on April 20, 1999, at Columbine High School in Columbine, Colorado, United States. Wikipedia
Date: April 20, 1999
Number of deaths: 15
Deaths: 15 (including both perpetrators)
Injured: 24 (21 by gunfire)
Perpetrators: Eric Harris and Dylan Klebold
Target: Students and staff at Columbine High School, first responders
Location: Columbine High School, Littleton, and Jefferson County