ALT Header banner titled "Under Attack: TARGETING OF JOURNALISTS AND HUMAN RIGHTS DEFENDERS IN MEXICO." The background features a dark photograph taken at Plaza Libertad de Expresión in Tijuana, Mexico. Relatives of murdered Mexican journalist Margarito Martínez carry floral memorial wreaths past monuments and walls featuring the names Francisco Zarco and Ricardo Flores Magón during a first-anniversary commemoration of his death. Photo credit: Guillermo Arias / AFP via Getty Images.