 A series of protest marches in the city in August gathered significant attendance, with an estimated 500,000 taking part on August 27.President Gustavo Díaz Ordaz ordered the occupation of the National Autonomous University of Mexico in September, but protests continued.Using the prominence brought by the Olympics, students gathered in Plaza de las Tres Culturas in Tlatelolco to call for greater civil and democratic rights and showed disdain for the Olympics with slogans such as "¡No queremos olimpiadas, queremos revolución!"