A man looks at photos of people who disappeared during the "Dirty War" in Argentina during an event to commemorate the 30th anniversary of the Argentine military coup, in Mexico City, Mexico on Mar. 24. At least 13,000 people are officially listed as disappeared or dead during the so-called "Dirty War" that right-wing military officers waged on leftists and other political dissidents after the coup. Human rights organizations put the toll of dead and missing at nearly 30,000.