Gilberto López y Rivas: Mexican anthropologist, essayist and politician, is professor-researcher at the National Institute of Anthropology and History, doctor in Anthropology from the University of Utah, of the United States, teacher in Anthropological Sciences from the National Autonomous University of Mexico ( UNAM) and the National School of Anthropology is History (ENAH). He is a member of the National System of Researchers (SNI), and a senior researcher at the INAH-Morelos Regional Center in Cuernavaca. He has had an active political life, in which his participation in the student movement of 1968 and his election as head of the Government of the Federal District in the Tlalpan Delegation in the period 2000-2003 stand out. He was a member of the Concord and Pacification Commission (Cocopa) and has served as a federal deputy for the LIV and LVII Legislatures of the Congress of the Union. In 1987 he was awarded the Roque Dalton Medal. He participated in the National Literacy Crusade (1980) and advised the Nicaraguan government on indigenous issues and autonomy between 1980 and 1990. He was an advisor to the Zapatista Army of National Liberation (EZLN) during the dialogue process that resulted in the signing of the Accords of San Andrés.