 After working for the "Diario de Xalapa", Martínez Pérez became a local correspondent for the newspaper "La Jornada" in the state and later joined the news magazine "Proceso", where she worked for more than ten years.The news magazine is well known for having an "anti-establishment publication" style, and often runs articles that criticize politicians across the country.Many of its reporters have been threatened in the past for their journalistic coverage.