Indigenous Indians demonstrate against proposed constitutional amendment PEC 215, which amends the rules for demarcation of indigenous lands, in Brasilia October 3, 2013. According to the organizers, the protest is part of the National Indigenous Mobilization, with events in various parts of Brazil from September 30 to October 5, to defend the territorial rights of the indigenous population against the government, agribusiness and large mining and energy companies. REUTERS/Ueslei Marcelino (BRAZIL - Tags: POLITICS CIVIL UNREST ENVIRONMENT)