So, where can one get the information from the site? Seems like mirroring and distributing widely would be the Internet neighborly thing to do, and would help prevent future takedowns of similar nature (because if they are ineffectual in their purpose, or if they actually result in more awareness of the censored material, officials will think twice before this kind of censorship).
From the look of it, it seems this was an action taken by the US government as a favour to the Mexican ruling party (PRI, who is known for having the "Perfect Dictatorship" for 70 years, and now has returned).
Unfortunately, when it comes to doing any action against injustice, government oppression and corruption, Mexican society is even worse than the USA society.