Andrés M. Estrada is a journalist and is the author of the book Policía CDMX Héroes y Demonios and co-author of the book Animal Trafficking Illegal trade in Mexico. He writes for El Sol de México and has collaborated with the investigative unit of El Universal, the digital magazine Emeequis, Political Expansion, Diálogo Chino, Aristegui Noticias and other media.