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Brenda Ann Spencer shot 11 people. 2 of the victims died, while 9 was injured
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Kip Kinkel started out by killing his parents, and then he went to his old school. He shot and killed 2 people and injured 25.
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Eric Harris and Dylan Klebold shot and killed 13 people. 12 students and 1 teacher
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Seung-Hui Cho shot and killed 32 people and injured 17.
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Adam Lanza shot and killed 26 people. He shot 20 students in the age of 6-7-years and 6 teachers.
He shot himself right after the massacre