Leonard Peltier is an activist and member of AIM, who, in 1977, was convicted and sentenced to two consecutive life terms for the shooting of two FBI agents during Pine Ridge. Peltier's supporters (who include Willie, Joni and Kristofferson) present him as a political prisoner due to concern over the fairness of his proceedings. His conviction is the subject of the 1992 documentary directed by Michael Apted and narrated by Robert Redford, Incident at Oglala: The Leonard Peltier Story, which you can watch in full right here. If you find yourself with 90 minutes to spare, watch it. It's a humdinger.(There's also They Buried The Heart of Leonard Peltier, which, oh lord, you should watch too. Redford's narration is substituted for the whitest sing-song narration you ever heard...)