Facebook and Zuckerberg are often called upon, or even accused, especially in countries with limits to free speech (lèse-majesté & others). They generally disregard the posturing that the court order represent and negotiate when the situation is alarming -- but truth is, the vast majority of regulation is done by other local users.

The only real impact a government can have, cutting Facebook access, even in the direst circumstances, is rarely a smart option.