Westinghouse Presents: The Dispossessed (1961)

In 1879, the American Indian lived under severe handicaps: having no legal status as a human being and with the requirement to stay on reservations. Defying the law, Ponca Chief Standing Bear leads his people off their disease-ridden reservation. Though they're captured, the Poncas are given three days to find a lawyer and find a legal way to become their own people once again.