Front row, left to right: Jorge Eduardo Acosta, "The Tiger"; Alfredo Astiz, the "Angel of Death"; pilot Georges Mario Daniel Arru; and Carlos Octavio Capdevilla, known as "Tommy," are seen during their sentencing hearing Wednesday in Buenos Aires. Javier Gonzalez Toledo/AFP/Getty Images hide caption
'dirty war'
Members of the Mothers of Plaza de Mayo human rights group demand information about missing relatives during their traditional Thursday march in Buenos Aires on March 3. The women began demonstrating in 1977. Victor R. Caivano/AP hide caption
Estela de Carlotto (center), head of the Argentine human rights organization that seeks to reunite babies stolen decades ago with their biological relatives, announced on Monday she had located her 36-year-old grandson. Martin Zabala/Xinhua/Landov hide caption
Argentine poet Juan Gelman is pictured at a news conference in March 2012. Pablo Porciuncula/AFP/Getty Images hide caption
Former dictator and Gen. Jorge Rafael Videla (left), and former general and member of the military junta Reynaldo Bignone in a Buenos Aires court on Thursday. Juan Mabromata/AFP/Getty Images hide caption