Columbine 1999

On April 20, 1999, two teens went on a shooting spree at Columbine High School in Littleton, Colorado, killing 13 people and wounding more than 20 others before turning their guns on themselves and committing suicide. The crime was the worst high school shooting in U.S. history and prompted a national debate on gun control and school safety, as well as a major investigation to determine what motivated the gunmen, Eric Harris, 18, and Dylan Klebold, 17. There was speculation that the two committed the killings because they had been bullied, were members of a group of social outcasts that was fascinated by Goth culture, or had been influenced by violent video games and music; however none of these theories was ever proven.