of him. Despite this, Martínez Domínguez was known for many years as "Halconzo", in reference to the Corpus Thursday Massacre. The number of dead in the demonstration discouraged many students, but also led others to be radicalized, some of whom later formed urban guerrilla organizations. Students in 1971 especially demanded the democratization of education, control of the university budget by students and teachers, and that it represent 12% of the GDP. They also demanded political freedom wherein workers, peasants, students, and intellectuals could enjoy real democratic freedoms and control the social system; quality education for everyone, especially farmers and workers; greater respect for cultural diversity; strict democratic transparency; and support for the political union of the workers. Los Halcones The Halcones were a Mexican paramilitary group created in the late 1960s and led by Colonel Manuel Díaz Escobar, then deputy director of General Services of the Federal District Department. Legal case In 2005, there was discussion in Mexico as whether the statute of limitations for the crimes committed in the Corpus Christi Massacre had expired or the criminals could still be judged responsible. On 29 November 2006, Luis Echeverría Álvarez pleaded guilty and was put on house arrest. In 2009 he was exonerated on the grounds that there was not sufficient evidence against him to support the charge of genocide. In fiction Mexican filmmaker Gabriel Retes produced, directed, and acted in a film titled El Bulto (The lump), where he portrays Lauro, a photojournalist, who was attacked by a Los Halcones member and left in a coma. The massacre is featured in the 2018 film Roma. The massacre is depicted in the first chapter of the 2021 novel Velvet Was the Night by Silvia Moreno-Garcia. One of the main characters, Elvis, is a member of Los Halcones. See also Tlatelolco Massacre Dirty War (Mexico) List of massacres in Mexico Kent State shootings References Massacres in Mexico Massacres in 1971 1971 in Mexico 1970s in Mexico City June 1971 events in Mexico Mass murder in 1971 1971 murders in Mexico