An indigenous man smokes during the opening ceremony of the People's Summit at Rio 20 for Social and Environmental Justice in Rio de Janeiro June 15, 2012. People's Summit at Rio 20 for Social and Environmental Justice is a parallel event of the Rio 20 United Nations sustainable development summit that will be held from June 20 to 22. REUTERS/Sergio Moraes (BRAZIL - Tags: ENVIRONMENT SOCIETY)
An indigenous man smokes during the opening ceremony of the People's Summit at Rio 20 for Social and Environmental Justice in Rio de Janeiro June 15, 2012. People's Summit at Rio 20 for Social and Environmental Justice is a parallel event of the Rio 20 United Nations sustainable development summit that will be held from June 20 to 22. REUTERS/Sergio Moraes (BRAZIL - Tags: ENVIRONMENT SOCIETY)
