FILE - In this in December 1979 file photo, Argentina's Mothers of Plaza de Mayo human rights group, whose children have disappeared, march in Buenos Aires's Plaza de Mayo. About 9,000 people were ultimately killed or disappeared during Argentina’s 1976-1983 dictatorship, according to an official accounting after democracy returned. Human rights activists believe the real number was as high as 30,000. The dead were not only those involved in the armed conflict, but journalists, dissidents, unionists and citizens caught in the crossfire. (AP Photo/Eduardo Di Baia, File)