There’s a really nice collection of Joao Pina’s photos of South America’s Disappeared on NPR Picture Show.
In 1975, the right-wing dictatorships of Argentina, Bolivia, Brazil, Chile, Uruguay and Paraguay embarked on a military plan called Operation Condor. The mission was to eliminate opponents to the regimes. Many of the victims came to be known as the “Disappeared,” because the government would simply make its detractors vanish.