On September 19, 1985, the center, South and West regions of Mexico, in particular the Federal District, were struck by a powerful earthquake , considered the most lethal in Mexican written history. Conmemorating the event 29 year later, the Secretary for Civil Protection of Federal District  organized an earthquake drill , for the population to know how to act in these events. The people participated massively, in the capital and in other cities of the country.
Realizamos con éxito el simulacro de evacuación por sismo, recordando el ocurrido en 1985, en la ciudad de México. pic.twitter.com/wQUM6h5Zpd 
— UTTAB (@UTTAB) septiembre 19, 2014 
We carried out successfully the evacuation due to earthquake, remembering what happened in 1985 in Mexico City.
— Metrópoli (@Univ_Metropoli) septiembre 19, 2014 
An estimated of 17,000 buildings were evacuated during the drill.
— YUCATAN AL MINUTO (@YUCATANALMINUTO) septiembre 19, 2014 
Rolando Zapata's Yucatán government has carried out historic drill in the Palace.
— Edgardo Garza (@egygarza) septiembre 19, 2014 
Tlalnepantla joins the megaearthquake driill organized in the State of Mexico.
— Venancio Queupumil (@VQ_Cabrera) septiembre 19, 2014 
The drill is not only to honor the victims of the earthquake, it's also about society vs bureaucracy.