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Bath Consolidated School
Andrew Kehoe was upset because of his farm foreclosure and ended up setting off a dynamite at the Bath Consolidated School in Bath Township in Michigan which killed 45 people and injured 58, a majority of the victims were grades 2-6 and it's known as the worst act of school violence in U.S. History http://www.npr.org/player/v2/mediaPlayer.html?action=1&t=1&islist=false&id=103186662&m=103201862 -
Swarthmore College
Bob Bechtel was 22 years old when he shot another student while he was sleeping. He was reoprtedly upset over being bullied. Found not guilty by reason of insanity. -
Paul Harold Orgeron
Paul Harold Orgeron, angry at the school's refusal to enroll his son at Poe Elementary School in Houston, Texas, detonates a suitcase of dynamite that kills him, his 7-year-old son, a teacher, a custodian, and two other students. -
Kent State Massacre
For 13 seconds on May 4, 1970, Ohio National Guardsmen opened fire on students protesting the Vietnam War at Kent State University in Kent, Ohio, killing four and wounding nine others. -
Columbine High School
Eric Harris, 18, and Dylan Klebold, 17, went on a shooting rampage and killed 12 students and one teacher, wounded 23 others and then killed themselves at Columbine High School in Littleton, Colorado.
http://www.cbsnews.com/video/watch/?id=2683181n -
Virginia Tech University
Cho Seung-Hui, 23, shot and killed two students at a dorm at Virginia Tech University in Blacksburg, Virginia, then killed 30 more people and wounded 15 others two hours later in a classroom building before he killed himself.