Hebe de Bonafini, leader of human rights group 'Mothers of Plaza de Mayo', protests in Plaza de Mayo square, outside the government house, Buenos Aires, Argentina, December 25, 2008. Protesters demanded to know the whereabouts of their relatives who were detained and disappeared during Argentina's dictatorship 25 years ago, and justice during trials for those responsible for human rights crimes. The human rights group 'Mothers of Plaza de Mayo' completes today 1600 Thursdays marching in the Plaza de Mayo demanding justice. (Austral Foto/Renzo Gostoli)

Hebe de Bonafini, leader of human rights group 'Mothers of Plaza de Mayo', protests in Plaza de Mayo square, outside the government house, Buenos Aires, Argentina, December 25, 2008. Protesters demanded to know the whereabouts of their relatives who were detained and disappeared during Argentina's dictatorship 25 years ago, and justice during trials for those responsible for human rights crimes. The human rights group 'Mothers of Plaza de Mayo' completes today 1600 Thursdays marching in the Plaza de Mayo demanding justice. (Austral Foto/Renzo Gostoli)