The Alcatraz Island Occupation was a pivotal event in Native American history, occurring from 1969 to 1971 when a group of Native American activists, primarily from the group Indians of All Tribes, occupied the abandoned federal prison as a protest against the U.S. government's policies towards Indigenous peoples. This occupation symbolized a broader Pan-Indian movement, uniting various tribes and fostering intertribal alliances aimed at advocating for Native rights and sovereignty.