Will Beck was a sophomore at Columbine High School on April 20, 1999, the day of the Columbine shooting. 20 years have passed since that fateful day but on this week's episode of "All In," we talk with Will about his memories of that day, what he learned from that experience and how it has shaped his life in the years since. He also responds to those who may question where God was that day. 

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