Chairman Peter Yucupicio and representatives of the Gila River Indian Community, the Cocopah Indian Tribe, Derechos Humanos and the International Indian Treaty Council, among others, lead a workshop about self-determination and indigenous people's rights, from 9 a.m. to 5 p.m., Saturday, Aug. 6. Free; lunch is included. Call 979-2125, or e-mail [email protected] for reservations or more information.