 In 1976, her 16-year-old son, Pablo, was taken by the authorities in a night-time raid on the family apartment, along with his girlfriend, María Zimmermann, in what appears to be a case of mistaken identity (the girl's former boyfriend was a student activist also named Pablo).They were not seen again by their families.Fernández Meijide campaigned for the rights of the families of the disappeared during the Dirty War of the 1970s.