The 1960s were marked by a series of anti-government movements that escalated to the Tlatelolco massacre , prompting then-President Echeverría and Mexican Congress to modified Article 10 of the Constitution to its present form today , which permits private ownership of firearms within the home only . In January 1972 , with the enactment of the Federal Law of Firearms and Explosives , the legal proliferation of firearms among the population was heavily limited and restricted
Tlatelolco massacre
Tlatelolco massacre
Firearms regulation in Mexico