Bismarck, North Dakota - Sept 7, 2016
Morton County Sheriff Kyle Kirchmeier poses for a portrait at the department's headquarters in Mandan, North Dakota, before speaking with the media.
In a historic gathering of more than a hundred Native American tribes from across North America, protestors are rallying to stop the pipeline they fear will poison the Missouri River, which runs through the Standing Rock Sioux reservation.
CREDIT: Alyssa Schukar for The New York Times