Anna Mae Aquash was a Mi'kmaq activist in the American Indian Movement (AIM) whose 1975 murder on South Dakota's Pine Ridge Reservation became shrouded in deception, initially ruled exposure but revealed by a second autopsy as an execution-style gunshot to the head, with suspicions pointing to AIM members believing she was an FBI informant, though convictions came decades later, revealing a complex web of betrayal and law enforcement involvement that her family continues to seek justice for, as explored in documentaries like Vow of Silence and The Spirit of Annie Mae.