Twenty-five years ago, an unimaginable tragedy rocked the suburban community of Littleton, Colo. — and the nation. On April 20, 1999, students and staff arrived at Columbine High School for what they believed was just another school day. But what would happen later that morning would change the lives of many for years to come.
The massacre began a little after 11 a.m., when two teenage gunmen opened fire at their high school, killing 12 students and one teacher, and injuring 24 others. The shooters subsequently died by suicide in the school library.
At the time of the attack, it was the deadliest school shooting in U.S. history, but since then, other school shootings, like the massacres at Florida’s Marjory Stoneman Douglas High School in 2018, and Texas’ Robb Elementary School in 2022, have claimed more lives.
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