Columbine High School Massacre
April 20, 1999
Two students, Eric Harris and Dylan Klebold, go on a shooting rampage at their Colorado high school, killing twelve students and a teacher, wounding twenty-four others, and then commit suicide. Harris and Klebold had constructed a series of bombs, but only the smaller bombs detonated properly. They had placed two large backpack bombs in the cafeteria which failed to explode. Had the bombs properly detonated, it is estimated that 500 or more would have died instantly. When the bombs failed to explode, they began shooting in the area of the cafeteria killing three students and then proceeded to library killing nine students and a teacher. They then committed suicide.