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Watch Zero Hour: Massacre at Columbine High (2004) Online

  • 8.1/10
  • RUNTIME: 0h 52m
  • Subtitles: English

This movie covers the final hour leading up to the Columbine High Massacre. On April 20, 1999, two boys from Columbine High School in Colorado embarked on a massacre and killed 12 students, one teacher, and injured 21 other students, before turning the guns on themselves.