Pataxo Indians watch a flag with the image of an Indian, raised by Greenpeace protesters, who were also on hand protesting against a proposed constitutional amendment which amends the rules for demarcation of indigenous lands in Brasilia, Brazil, Tuesday, Oct. 1, 2013. Greenpeace activists and Brazilian Indians gathered in their respective protests in the Brazilia's main square, marking the first day of the National Indigenous Mobilization protest against the constitutional amendment. (AP Photo/Eraldo Peres) ( Brazil Greenpeace Protest )