FILE - In this Nov. 20, 2016, file photo, provided by Morton County Sheriff's Department, law enforcement and protesters clash near the site of the Dakota Access pipeline near Cannon Ball, N.D. Prosecutors have withdrawn a subpoena for Steve Martinez, a pipeline opponent from Williston, N.D., who had been ordered to testify about the violent clash in November. (Morton County Sheriff's Department via AP)
Featured Photo Galleries
