CANNON BALL, NORTH DAKOTA - DECEMBER 2: North Dakota national guardsmen stand guard on Turtle Island watching activists and native americans at Oceti Sakowin Camp on the edge of the Standing Rock Sioux Reservation on December 3, 2016 outside Cannon Ball, North Dakota. Native Americans and activists from around the country have been gathering at the camp for several months trying to halt the construction of the Dakota Access Pipeline. The proposed 1,172-mile-long pipeline would transport oil from the North Dakota Bakken region through South Dakota, Iowa and into Illinois. on December 1, 2016 in Cannon Ball North Dakota, Colorado. (Photo by Helen H. Richardson/The Denver Post via Getty Images)
