20: Columbine Shooting

Columbine Shooting

At Columbine High School in Littleton, Colorado, two teens went on a shooting spree on April 20, 1999, killing 13 people and wounding more than 20 others before turning their guns on themselves and committing suicide. The Columbine shooting was, at the time, 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.

Dylan Klebold and Eric Harris

At approximately 11:19 a.m., Dylan Klebold and Eric Harris, dressed in trench coats, began shooting fellow students outside Columbine High School, located in a suburb south of Denver. The pair then moved inside the school, where they gunned down many of their victims in the library.  By approximately 11:35 a.m., Klebold and Harris had killed 12 students and a teacher and wounded more than 20 other people. Shortly after 12 p.m., the two teens turned their guns on themselves. Investigators later learned Harris and Klebold had arrived in separate cars at Columbine around 11:10 on the morning of the massacre. The two then walked into the school cafeteria, where they placed two duffel bags each containing a 20-pound propane bomb set to explode at 11:17 a.m.  The teens then went back outside to their cars to wait for the bombs to go off. When the bombs failed to detonate, Harris and Klebold began their shooting spree.

Columbine Shooting Investigation

Subsequent investigations determined Harris and Klebold chose their victims randomly, and the two teens originally had intended to bomb their school, potentially killing hundreds of people. There was speculation that Harris and Klebold committed the killings because they were members of a group of social outcasts called the Trenchcoat Mafia that was fascinated by Goth culture. It also was speculated that Harris and Klebold had carried out the shootings as retaliation for being bullied.  Additionally, violent video games and music were blamed for influencing the killers. However, none of these theories was ever proven. Through journals left behind by Harris and Klebold, investigators eventually discovered the teens had been planning for a year to bomb the school in an attack similar to the 1995 Oklahoma City bombing. Investigative journalist Dave Cullen, author of the 2009 book Columbine, described Harris as “the callously brutal mastermind,” while Klebold was a “quivering depressive who journaled obsessively about love and attended the Columbine prom three days before opening fire.”

Columbine Massacre Aftermath

In the aftermath of the shootings, many schools across America enacted “zero-tolerance” rules regarding disruptive behavior and threats of violence from students. Columbine High School reopened in the fall of 1999, but the massacre left a scar on the Littleton community.  Mark Manes, the man who sold a gun to Harris and bought him 100 rounds of ammunition the day before the murders, was sentenced to six years in prison. Another man, Philip Duran, who introduced Harris and Klebold to Manes, also was sentenced to prison time.  Some victims and families of people killed or injured filed suit against the school and the police; most of these suits were later dismissed in court.

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