Native American protestors march from an encampment on the banks of the Cannonball River to a nearby construction site for the Dakota Access pipeline to perform a daily prayer ceremony. Over 1,000 people, most Native American, have gathered at two prayer camps along the Cannonball River near its confluence with the Missouri in North Dakota to protest the Dakota Access pipeline. The pipeline is slated to extend from North Dakota to Illinois, carrying crude oil from the Bakken shale play. The Standing Rock Sioux tribe filed an injunction against the US Army Corps of Engineers in federal court in Washington DC, claiming that the Army Corps did not take tribal spiritual and heritage sites into consideration when it granted permits for the pipeline. The court has postponed a decision until Sept. 9, 2016.