President Barack Obama pauses as he speaks about gun violence at the Annual Meeting of the U.S. Conference of Mayors in San Francisco, Friday, June 19, 2015. (AP Photo/Carolyn Kaster)
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President Barack Obama pauses as he speaks about gun violence at the Annual Meeting of the U.S. Conference of Mayors in San Francisco, Friday, June 19, 2015. (AP Photo/Carolyn Kaster)
