Dave Archambault, chairman of the Standing Rock Sioux Tribe, stands outside a federal courthouse in Washington, D.C., on Oct. 5. Jessica Gresko/AP hide caption
Protests against the Dakota Access Pipeline have been raging for months, but tensions have been escalating. Recently, tribal leaders — led by Standing Rock Sioux Tribe Chairman Dave Archambault II — called on the Department of Justice to look into what they describe as unnecessary use of force by state and local law enforcement.
The tribe is going up against Energy Transfer Partners, an oil giant intending to build the $3.8 billion pipeline to carry more than a half-million barrels of oil…