Kayapo Chief Raoni Txucarrhamae speaks to a packed audience about his people's opposition to the construction of hydroelectric dams, especially Belo Monte; to the left is indigenous lawyer Joenia Batista de Carvalho, a Wapichana Indian. The People's Summit at the United Nations Conference on Sustainable Development (Rio+20), Rio de Janeiro, Brazil, 16th June 2012. Photo © Sue Cunningham.