Photos: Remembering the Columbine High School shooting massacre
School Crimes
On April 20, 1999, two Colorado teens walked into Columbine High School in Littleton, where they fatally shot 13 people and injured over 20 others before turning the guns on themselves, ending their own lives. The tragic annihilation is considered one the worst mass shootings in U.S. history. At around 11:19 a.m. on Tuesday morning, Dylan Klebold, …