Carlos Lordkipanidse, 59, at his home in Buenos Aires. He was held at Argentina's Naval Mechanics School (ESMA) for more than two years during Argentina's military dictatorship from 1976-83. A photographer, today Lordkipanidse is a key witness in human rights trials against former police and military officials at ESMA. Kyle Younker / Special to The Herald

Adolfo Perez Esquivel at his office in Buenos Aires. He was awarded the Nobel Peace Prize in 1980 for his efforts to denounce the human rights violations of the military junta. Now 80, he continues to be a prominent speaker and activist for peace and justice. Kyle Younker / Special to The Herald