Anderson Cooper on coping with his grief: 'Shouldn’t I be over this?'

"The Whole Story with Anderson Cooper" returns with an urgent examination of the history of political violence in the US. "Political Violence: America's Bloody History" with CNN anchor and senior national correspondent Sara Sidner premieres Saturday at 8pm ET/PT on CNN. | CNN

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Anderson Cooper: "The war has changed"

Anderson Cooper: When courage is called for but cowardice answers