Phil Little Thunder Sr. attends an evening gathering at an encampment where hundreds of people have gathered to join the Standing Rock Sioux Tribe\'s protest against the construction of the Dakota Access Pipe (DAPL), near Cannon Ball, North Dakota, on September 3, 2016. (credit:ROBYN BECK via Getty Images)
(02 of15)
Open Image Modal
Protestors gather at the blocked entrance to a construction site for the Dakota Access Pipeline to express their opposition to the pipeline. (credit:ROBYN BECK via Getty Images)
(03 of15)
Open Image Modal
Native Americans march to a sacred burial ground that was disturbed by bulldozers building the Dakota Access Pipeline (DAPL). (credit:ROBYN BECK via Getty Images)
(04 of15)
Open Image Modal
People hang a sign near a burial ground sacred site that was disturbed by bulldozers building the Dakota Access Pipeline (DAPL). (credit:ROBYN BECK via Getty Images)
(05 of15)
Open Image Modal
Native Americans march to a burial ground sacred site that was disturbed by bulldozers building the Dakota Access Pipeline (DAPL). (credit:ROBYN BECK via Getty Images)
(06 of15)
Open Image Modal
Native Americans march to a burial ground sacred site that was disturbed by bulldozers building the Dakota Access Pipeline (DAPL). (credit:ROBYN BECK via Getty Images)
(07 of15)
Open Image Modal
A Native American protestors holds up his arms as he and other protestors are threatened by private security guards and guard dogs. (credit:ROBYN BECK via Getty Images)
(08 of15)
Open Image Modal
Over a thousand activists rallied on the steps of the U.S. District Court Washington DC in solidarity with Standing Rock Sioux Tribe, who has sued the U.S. Army Corps of Engineers over its approval of the $3.8 billion Dakota Access Pipeline. (credit:Pacific Press via Getty Images)
(09 of15)
Open Image Modal
Actress Susan Sarandon speaks during a rally and protest by the Standing Rock Sioux tribe in support of a lawsuit against the Army Corps of Engineers and plans for the Dakota Access Pipeline outside the US District Court in Washington, DC. (credit:SAUL LOEB via Getty Images)
(10 of15)
Open Image Modal
Native Americans march in protest against the Dakota Access Pipeline (DAPL) near Cannon Ball, North Dakota, September 3, 2016. (credit:ROBYN BECK via Getty Images)
(11 of15)
Open Image Modal
Actress Shailene Woodley speaks during the Enough is Enough protest in Los Angeles California, August 27, 2016. (credit:NurPhoto via Getty Images)
(12 of15)
Open Image Modal
Protestors march to a construction site for the Dakota Access Pipeline to express their opposition to the pipeline. (credit:ROBYN BECK via Getty Images)
(13 of15)
Open Image Modal
North Dakota Native American children participate in the Stop The Dakota Access Pipeline protest at Union Square on August 7, 2016 in New York City. (credit:John Lamparski via Getty Images)
(14 of15)
Open Image Modal
North Dakota Native American children participate in the Stop The Dakota Access Pipeline protest at Union Square on August 7, 2016 in New York City. (credit:John Lamparski via Getty Images)
(15 of15)
Open Image Modal
An Eagle Staff is held up as Native Americans gather during a rally outside U.S. District Court in Washington, Wednesday, Aug. 24, 2016, in solidarity with the Standing Rock Sioux Tribe in their lawsuit against the Army Corps of Engineers to protect their water and land from the Dakota Access Pipeline. (credit:ASSOCIATED PRESS)