The horrific shooting at the Newtown, Conn., elementary school that left 28 dead, including 20 children, has re-ignited a polarizing debate over gun control.

If nothing else, it's time to get very, very serious about discussing the issue.

The shooting at Sandy Hook Elementary School in Newtown, Conn., left a nation in shock Friday afternoon after Adam Lanza gunned down 27 people, 20 of them children.

Hollywood Tweeted up a storm in response, sharing love, condolences, prayers and heartbreak, but also anger, disgust and frustration in many cases.

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