Mexicans are talking about the corruption that takes place in these construction projects - it's often budgeted into the project, the amount of money they'll have to pay in bribes. It's the system, everyone knows it's happening, but you can't necessarily go on the record to talk about it because the construction companies and government officials are in on it.

Journalist Martha Pskowski explains how government / construction industry corruption and a powerless regulatory system amplified the effects of Mexico City's deadly September earthquake, and why the disaster has revealed the economic fault-lines running across the city's politics and between the city's classes.

Martha wrote the Guardian article 6,000 complaints ... then the quake: the scandal behind Mexico City's 225 dead.