No I know nothing about the fella, just the juxtaposition between peace activist and convicted murderer struck me as amusing. But seeing as Obama denied his clemency appeal I don't think it's as black and white as you are making out.
I don’t really see what Obama has to do with it. Look him up. He’s widely considered a political prisoner.
The U.S. Parole Commission has held a number of parole hearings on Leonard Peltier’s case. However, it has denied parole on the grounds that Leonard Peltier did not accept criminal responsibility for the murders of the two FBI agents. This is despite the fact that, after one such hearing, the Commission acknowledged that, “the prosecution has conceded the lack of any direct evidence that you personally participated in the executions of two FBI agents”. Furthermore, James H. Reynolds, former US Attorney and the supervisor of the attorneys who prosecuted Leonard Peltier and handled his appeal, has publicly called for clemency and the release of Leonard Peltier.
Things are rarely ever black and white.