Quality of life in the area diminished after the Tlatelolco massacre on 2 October 1968 , which occurred on the Plaza de las Tres Culturas . The area 's only fire station closed during that year and police presence began to diminish , leading to rising crime . The complex suffered damage from two small earthquakes in 1979
Tlatelolco massacre
Tlatelolco massacre
Conjunto Urbano Nonoalco Tlatelolco