60 Minutes overtime. >> What was Gracie like. >> She was lively.>> Very >> like Yeah. Just full of life. Love life.Love people, you know, was adventurous. >> Your face lights up just thinking about >> cuz she was, you know, just super special girl. This week on 60 Minutes, I worked on a story with producer Katie Brennan about the empty rooms that are left behind by children who have been murdered in school shootings.>> I'd gotten a sense that the country had grown numb to all the school shootings, and I tho ...

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