US-ENVIRONMENT-PROTEST

Native Americans march to the site of a sacred burial ground that was disturbed by bulldozers building the Dakota Access Pipeline (DAPL), near the encampment where hundreds of people have gathered to join the Standing Rock Sioux Tribe's protest of the oil pipeline slated to cross the nearby Missouri River, September 4, 2016 near Cannon Ball, North Dakota. Protestors were attacked by dogs and sprayed with an eye and respiratory irritant yesterday when they arrived at the site to protest after learning of the bulldozing work. / AFP / ROBYN BECK (Photo credit should read ROBYN BECK/AFP via Getty Images)