The Columbine High School shooting occurred on April 20, 1999, at Columbine High School in Littleton, Colorado, United States. Fourteen people, not including the two shooters, died in what was one of the worst mass shootings in U.S. history at the time. Although neither the first nor the worst school shooting in the United States, Columbine galvanized national attention around the issue of school violence in a way other incidents had not. It would become part of a litany of tragic school shootings that would become known by the school name: Virginia Tech, Sandy Hook Elementary School, Marjory Stoneman Douglas High, and Robb Elementary.
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