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Mexican President Gustavo Díaz Ordaz orders soldiers to suppress a demonstration of unarmed students, ten days before the start of the 1968 Summer Olympics.

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Gustavo Díaz Ordaz
President of Mexico from 1964 to 1970
Gustavo Díaz Ordaz Bolaños was a Mexican politician and member of the Institutional Revolutionary Party (PRI). He served as the President of Mexico from 1964 to 1970. Previously, he served as a member of the Chamber of Deputies for Puebla's 1st district, a senator of the…Source: Wikipedia (CC BY-SA)
Tlatelolco massacre
1968 killing of anti-government protestors by the Mexican Armed Forces in Mexico City
The Tlatelolco massacre was a military massacre committed by the Mexican Armed Forces against the students of the National Autonomous University of Mexico (UNAM), the National Polytechnic Institute (IPN), and other universities in Mexico.Source: Wikipedia (CC BY-SA)
1968 Summer Olympics
Multi-sport event in Mexico City, Mexico
The 1968 Summer Olympics, officially known as the Games of the XIX Olympiad and officially branded as Mexico 1968, were an international multi-sport event held from 12 to 27 October 1968, in Mexico City, Mexico. These were the first Olympic Games to be staged in Latin America,…Source: Wikipedia (CC BY-SA)
October 2
Day of the year
October 2 is the 275th day of the year in the Gregorian calendar; 90 days remain until the end of the year.Source: Wikipedia (CC BY-SA)