Indigenous Brazilians Protest Dam. Great Photographs; Blood

Brazilian Indians ride a bus in Altamira, Brazil, Wednesday, May 21, 2008. Amazon Indians and activists continue to protest a proposed hydroelectric dam on the nearby Xingu River. (AP Photo/Andre Penner)

Paulo Fernando Rezende, an engineer for Brazil's national electric company Eletrobras in charge of Belo Monte dam studies, is seen before being attacked with machetes by Indians who are protesting a proposed hydroelectric dam in Altamira, Brazil, Tuesday, May 20, 2008. (AP Photo/Andre Penner)

Paulo Fernando Rezende, an engineer for Brazil's national electric company Eletrobras in charge of Belo Monte dam studies, is surrounded by the press after being attacked with machetes by Indians who are protesting a proposed hydroelectric dam in Altamira, Brazil, Tuesday, May 20, 2008. Rezende, who suffered a deep gash on his right shoulder, was attacked moments after he gave a presentation to a gathering debating the impact of the Belo Monte dam on traditional communities. (AP Photo/Andre Penner)

More.