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US Navy veteran John Gutekanst from Athens, Ohio, waves an American flag as an activist approaches the police barricade with his hands up on a bridge near Oceti Sakowin Camp on the edge of the Standing Rock Sioux Reservation on December 4, 2016 outside Cannon Ball, North Dakota.
Native Americans and activists from around the country gather at the camp trying to halt the construction of the Dakota Access Pipeline.  / AFP / JIM WATSON        (Photo credit should read JIM WATSON/AFP/Getty Images)
US Navy veteran John Gutekanst from Athens, Ohio, waves an American flag as an activist approaches the police barricade with his hands up on a bridge near Oceti Sakowin Camp on the edge of the Standing Rock Sioux Reservation on December 4, 2016 outside Cannon Ball, North Dakota.
Native Americans and activists from around the country gather at the camp trying to halt the construction of the Dakota Access Pipeline.  / AFP / JIM WATSON        (Photo credit should read JIM WATSON/AFP/Getty Images)

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    Police have their say about Standing Rock

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Police have their say about Standing Rock

Police at the Dakota Access Pipeline protests give their side of the story about confrontations with protestors to CNN's Sara Sidner.

Police have their say about Standing Rock

Police at the Dakota Access Pipeline protests give their side of the story about confrontations with protestors to CNN's Sara Sidner.