The Columbine High School shooting occurred on April 20, 1999, in Littleton, Colorado. Two students, Eric Harris and Dylan Klebold, carried out a planned attack on their school, resulting in the deaths of 12 students and one teacher. The incident also left many others injured and caused widespread panic. The shooting lasted approximately 49 minutes and ended with the perpetrators taking their own lives. This tragic event sparked national conversations about school safety, gun control, and the influence of bullying and mental health issues. It remains one of the deadliest school shootings in U.S. history.