Greenpeace activists and Munduruku Indians use stones to form the Tapajós Free phrase on a sandy beach on the banks of the eponymous river, near the city of Itaituba, in Pará. The protest, which was attended by about 60 Mundurukú, It occurred in the region where the government plans to build the first of a series of five dams in the Tapajós basin. (Photo Greenpeace / Marizilda Cruppe 11/26/2014) - CC BY 2.0 via Fllckr