Tens of thousands of Argentines held protests across the country, demanding answers one month after the disappearance of an indigenous rights activist. Demonstrators held photos of Santiago Maldonado, who was last seen when border police evicted a group of indigenous Mapuche from lands in the southern Patagonia region. In Buenos Aires, protesters converged on the Plaza de Mayo, iconic for its role in the struggle to demand justice for the "disappeared" under the military dictatorship.