Grace McDonnell's mom and dad want people to understand their pain and loss so they'll take action on gun legislation. Their 7-year-old daughter was killed in the Sandy Hook Elementary School shooting in Newtown, Connecticut.
Lynn and Chris McDonnell met with Vice President Biden and New York City Mayor Michael Bloomberg today. Anderson Cooper spoke with them about their efforts to prevent another massacre.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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