People carry an American and a Mohawk Warrior Society flag at a protest camp against the Dakota Access Pipeline, in Cannon Ball, North Dakota, USA.
The Dakota Access Pipeline (DAPL) is a 1,886-kilometer-long underground oil pipeline project designed to transport oil from North Dakota to a shipping terminal in Illinois, USA. By 2016, most of the pipeline was complete, but the section closest to the Standing Rock Sioux reservation still awaited federal approval. The Standing Rock Sioux people opposed the DAPL, fearing water contamination and damage to sacred tribal sites. A stretch of the pipeline was set to run under the Missouri River—the prime source of drinking water for the reservation. Large protests at Lake Oahe gained national and international attention. Traditional religious ceremonies and prayer formed part of the day at the protesters’ camp.