21 of 25: Dawn Hochsprung, 47, principal. Dawn Hochsprung's pride in Sandy Hook Elementary was clear. She regularly tweeted photos from her time as principal there, giving indelible glimpses of life at a place now known for tragedy. Just this week, it was an image of fourth-graders rehearsing for their winter concert, days before that the tiny hands of kindergartners exchanging play money at their makeshift grocery store. (AP Photo)

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