Curry, Melo among NBA stars in anti-gun-violence ad

Stephen Curry heard about a shooting involving a 3-year-old girl over the summer. "My daughter Riley is that age," he said.

That begins a public service announcement that debuts on Christmas and features four NBA stars lending their voices to the campaign to end gun violence.

Carmelo Anthony, Chris Paul and Joakim Noah also are featured in the spot in support of Everytown for Gun Safety, the nation's largest violence prevention organization in the country.