The Columbine Massacre occurred on Tuesday, April 20, 1999 at Columbine High School in Columbine, Colorado. Two students, Eric Harris and Dylan Klebold, went on a shooting spree killing 12 students and one teacher and wounding 23 others before committing suicide. It is the fourth worst school killing in United States history.
When the bombs they planted in the school cafeteria failed to go off, Harris and Klebold began shooting at 11:19 am. After killing and wounding several students, a Jefferson County deputy sheriff arrived at the scene at approximately 11:24 am and began shooting at Harris and Klebold. At 11:29 am, they entered the school library killing and wounding several students. The two teenagers left the library at 11:42 am, ending the massacre.
Harris and Klebold wandered around the school for a few minutes before returning to the library where they committed suicide at 12:08 pm. In the wake of the shootings, debate raged about the killers’ motivation and if anything could have been done to prevent the massacre. The existence of social cliques in high school and the effect of bullying on Klebold and Harris were raised.
Since the shooting, several schools in the U.S. have instituted new security measures and calls for more gun control measures. A memorial was dedicated on September 21, 2007 in Clement Park where immediate memorials were held after the shootings.










































