Cris Williamson Cris Williamson

Cris Williamson

Chanse Zavalla, 22, left, and O'Shea Spencer, 20, right, stand in front of the remains of a hogan structure, set on fire ahead of the Army Corp's deadline to leave the Oceti Sakowin protest camp on February 22, 2017 in Cannon Ball, North Dakota. Stephen Yang/Getty Images hide caption

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Stephen Yang/Getty Images