With their faces covered, demonstrators carry a traffic signal during clashes with police officers after a protest in front of La Moneda government palace in Santiago, Chile, Friday, May 20, 2011. The... more 
With their faces covered, demonstrators carry a traffic signal during clashes with police officers after a protest in front of La Moneda government palace in Santiago, Chile, Friday, May 20, 2011. The protest was against a some $7 billion project by the multinational consortium HidroAysen to dam two of the world's wildest rivers in Chile's Patagonia for electricity. The project recently won environmental approval from a Chilean government commission, despite a groundswell of opposition. The dams would flood part of the area, requiring the relocation of its residents. less 
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Associated Press | Photo By Luis Hidalgo
Fri, May 20, 2011 10:43 PM EDT