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Why Did Adam Lanza Snap?

Part 2: Shooter was "a little bit different - kind of repressed."
04:33 | 12/15/2012

Transcript for Why Did Adam Lanza Snap?

And that takes us to our chief investigative correspondent brian ross, trying to understand this young man and the troubles that led him to this hosht act. Brian? He was arnled with guns and went from... See More
This transcript has been automatically generated and may not be 100% accurate.
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