"I walked out. Relatives of Sitting Bull won't be happy," said Joseph Brings Plenty, Lakota, chairman of the Cheyenne River Sioux Tribe, in an interview with Indian Country Today. "They portrayed him as a cruel man; he was a holy man, he took care of the people."
Many have found the use of the character Eastman to be an attempt on the part of HBO to provide a sort of buffer between the Native American characters and a largely white audience. Critics, however, have deemed this unnecessary, even offensive, citing acclaimed mini-series "Roots" as rebuttal to the assumption that a white audience needs a "whiter" character to relate.