By Graham Lee Brewer AP-Indigenous activist Leonard Peltier is set to be released from a Florida prison Tuesday based on former President Joe Biden having commuted his life sentence for the 1975 killings of two FBI agents, a decision that elated Peltier’s supporters while angering law enforcement officials who believe in his guilt. For nearly half a century, Peltier’s imprisonment has symbolized systemic injustice for Native Americans across the country who believe in his innocence. The decision to release the 80-year-old to home confinement was celebrated by supporters. “He represents every person who’s been roughed up by a cop, profiled, had their children harassed at school,” said Nick Estes, a professor of American Indian Studies at the University of Minnesota and a member of the Lower Brule Sioux Tribe who…