Sitting Bull named Wovoka, spread a religious movement from Nevada eastward to the Plains in 1889 that preached a resurrection of the Native. This was a time of severe conditions of harsh winters and long droughts impacting the Sioux Reservation. It was known as the "Ghost Dance Movement", because it called on the Indians to dance and chant for the rising up of deceased relatives and return of the buffalo. When the movement reached Standing Rock, Sitting Bull allowed the dancers to gather at his camp. Although he did not appear to participate in the dancing, he was viewed as a key
Sitting Bull natives joined him for safety in numbers. His leadership had attracted warriors and families, creating an extensive village estimated at more than 10,000 people. Lt. Col. Custer came across this large camp on June 25, 1876. Sitting Bull did not take a direct military role in the ensuing battle; instead he acted as a spiritual leader. A week prior to the attack, he had performed the Sun Dance, in which he fasted and sacrificed over 100 pieces of flesh from his arms. Custer's 7th Cavalry advance party attacked Cheyenne and Lakota tribes at their camp on the Little Big Horn