The Lakota leader who was arrested by the US Army?

The Lakota leader who was arrested by the US Army was Sitting Bull. He was a prominent chief and medicine man known for his resistance against U.S. government policies and military actions aimed at displacing Native Americans from their lands. Sitting Bull was ultimately arrested in December 1890, during a crackdown on the Ghost Dance movement, which he supported. His arrest led to his tragic death during an altercation with police.