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Columbine High School massacre happened on 1999-04-20.

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9y ago
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1w ago

The Columbine High School massacre occurred on April 20, 1999. Two students, Eric Harris and Dylan Klebold, carried out a shooting spree that resulted in the deaths of 12 students and a teacher, as well as injuring many others, before taking their own lives.

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Q: When did Columbine High School massacre happen?
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