Native Americans head to a rally at the State Capitol in Denver, Colo., Thursday, September 8, 2016, to protest in solidarity with members of the Standing Rock Sioux tribe in North Dakota over the construction of the Dakota Access oil pipeline. The tribe argues that the pipeline, which crosses four states to move oil from North Dakota to Illinois, threatens water supplies and has already disrupted sacred sites. (Photo by David Zalubowski/AP Photo)
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