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An image taken from Facebook shows Martin Richard, the 8-year-old killed during the explostions at the Boston Marathon, holding a shign calling for peace.  The sign was created for a "peace walk" that Richard and his fellow second graders took part in in 2012.
An image taken from Facebook shows Martin Richard, the 8-year-old killed during the explostions at the Boston Marathon, holding a shign calling for peace.  The sign was created for a "peace walk" that Richard and his fellow second graders took part in in 2012.

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    Candlelight vigil for 8-year-old victim

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Candlelight vigil for 8-year-old victim

CNN's Gary Tuchman reports from a candlelight vigil for 8-year-old bombing victim Martin Richard in Dorchester, MA.

Candlelight vigil for 8-year-old victim

CNN's Gary Tuchman reports from a candlelight vigil for 8-year-old bombing victim Martin Richard in Dorchester, MA.