The group called Peltier, a Native American activist convicted in 1977 for the murder of two US FBI agents, the longest serving political prisoner in the Americas. The case stemmed from a shootout at a reservation in the US state of South Dakota.
"Leonard Peltier, who on September 12, 2011 will turn 67, has spent more than half his life in prison. He is a symbol of resistance to repressive state policies by the United States, where there are people in jail for ethnic, racial, ideological and religious reasons," a foundation statement said.
