Sonja Wolf, Cátedra Conacyt adscrita a la División de Estudios Multidisciplinarios del CIDE, escribió el ensayo Urban Violence: Maras, Meanings, and Murders en la revista Latin American Research Review.   Abstract The United States is the birthplace of the Mara Salvatrucha (or MS-13) and Eighteenth Street gangs and the region’s largest consumer market for illicit drugs. Successive