In the mid-1970s , she started her career as a journalist for '' The Guardian '' , moving later to the '' Washington Post '' . In January , 1982 , Guillermoprieto , then based in Mexico City , was one of two journalists ( the other was Raymond Bonner of '' The New York Times '' ) who broke the story of the El Mozote massacre in which some 900 villagers at El Mozote , El Salvador , were slaughtered by the Salvadoran army in December , 1981
El Mozote massacre
El Mozote massacre
Alma Guillermoprieto