The Columbine High School massacre was a school shooting which occurred on April 20, 1999. Two senior students, Eric Harris and Dylan Klebold, murdered a total of 12 students and one teacher. They injured 21 additional students, with three other people being injured while attempting to escape the school. The pair then committed suicide. http://en.wikipedia.org/wiki/Columbine_High_School_massacre
Dylan Klebold and Eric Harris Together these two young men were brought to the world's attention when they laid siege to Columbine High School the morning of April 20, 1999. For well over a year before the shooting the boys had been making plans to attack their school and the people in it. According to what they said in the hate-filled journals and videos they left behind, they wanted to take revenge on the people they accused of picking on and snubbing them.