Paducah, Jonesboro, Columbine and Newtown: A chain of tragedy and grief

It was five years ago that a young man invaded Sandy Hook Elementary School in Newtown, Conn., and shot and killed 20 young children and six staff members, a tragedy that indelibly scarred that small city and lives on in the collective national memory. But school shootings didn’t begin, or end, with Sandy Hook. Yahoo News looks at the aftermath of four of these tragedies and the lives they changed.

Read the related story: School shooting survivors united by a chain of grief – and hard lessons passed on >>>

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