Sandy Hook families launch campaign to prevent gun violence

      |Families of the 26 killed in the Sandy Hook Elementary School shooting have launched Parent Together, which they hope will start a national conversation about gun safety at home and how to reach troubled students in schools. Nicole Hockley, who lost her son Dylan in the shooting, and Bill Sherlach, whose wife was killed, speak with Scott Pelley about the initiative and their reaction to Congress' failure to pass gun legislation.

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