"Just this December, Facebook agreed to censor the page of Russia’s leading Putin critic, Alexei Navalny, at the request of Russian Internet regulators."
"Critics have previously accused the site of taking down pages tied to dissidents in Syria and China; the International Campaign for Tibet is currently circulating a petition against alleged Facebook censorship, which has been signed more than 20,000 times."
"“I’m committed to building a service where you can speak freely without fear of violence,” Zuckerberg said in his Hebdo statement."
The outlandishly egregious doublespeak of Zuck aside, Facebook is a data mining company devoted to making money from its users. The only terms on which it can be said to support free speech are the terms under which it is able to mine user data, then sell user data. In less polite terms, Facebook is a no-limits whore for anyone with cash, so we should expect to see exactly what we are seeing.
Here's a question: what are the conditions under which Facebook will censor the content in the US/European market? I guarantee you that it's coming, provided the right topics are being discussed and the right groups are interested in squashing discussion.