Documentarian Richard Ladkani follows 34-year-old activist Juma Xipaia through her fight in Brazil "Yanuni" (Image courtesy of Tribeca Film Festival) In 2009, 18-year-old Juma Xipaia announced that her destiny would be “fighting for the Indigenous cause. Standing up for my people. My life,” she added with understated prescience, “is going to be one of struggle.” Just six years later, she became the first female chief of the Middle Xingu, in Brazil’s Amazon basin. Since then, she has led a