Sitting Bull in their land, as specified in the 1868 Treaty of Fort Laramie. It was alarmed at reports of Sioux depredations (encouraged by Sitting Bull). In November 1875, President Grant ordered all Sioux bands outside the Great Sioux Reservation to move onto the reservation, knowing full well that not all would comply. As of February 1, 1876, the Interior Department certified as "hostile" those bands who continued to live off the reservation. This certification allowed the military to pursue Sitting Bull and other Lakota bands as "hostiles". Based on tribal oral histories, historian Margot Liberty theorizes many Lakota bands allied with
Indian agency police Cherokee, had well-developed systems of tribal laws and tribal courts; the agency police also enforced these laws, and testified and maintained order in the tribal courts. Since the agency police were federal officers, crimes against them had to be tried in a United States district court. Several Indian agency police were responsible for the death of the Lakota leader Sitting Bull. Indian agency police Indian agency police were policemen hired by United States Indian agents during the late 19th and early 20th centuries and assigned to a Native American tribe. It was the duty of Indian agency police to enforce