A Mexican journalist whose articles have illuminated Latin America for her readers, Alma Guillermoprieto is a contributor to the British-based Guardian newspaper, The Washington Post, The New York Review of Books, Newsweek and The New Yorker, she has covered Argentina’s “dirty war,” post-Sandinista Nicaragua, the “Shining Path” rebels in Peru, the Colombian civil war and the Mexican drug wars. In 1982, she was one of only two reporters to investigate rumors of mass killings perpetrated by the U.S.-supported Salvadoran army in El Mozote, El Salvador. When she published her reports in The Washington Post, the Reagan Administration tried to discredit her, but she stood firm. Eventually, the U.S. government was forced to confirm her story.