Matilde Melibosky, member of the group of human rights "Madres de Plaza de Mayo" shouts out March 20, outside of the Argentine Army headquarters "Regimiento de Patricios" asking for her daugther Graciela, who disappeared in 1976. Human rights organizations are commemorating the 20th anniversary of the 1976 military coup and the years of the "Dirty War" in which at least 10,000 people disappeared.

ARGENTINA MISSING