There are several ways to respond. We can take the absolutist position that Facebook should never censor - and that may be OK if Facebook actually holds to that positions and trains their audience correctly ("Hey, everything on your feed is unverified and you should never consider anything you read here as having value").
Facebook has a long history of engaging in censorship of some kind though, so that's very unlikely as an actual outcome. They could try to form a coherent policy ("We shall censor nudity, things that disagree with US history books and anything that shows violence that isn't a cartoon") but those policies are probably impossible to write.
They're probably in a ditch they can't rescue themselves from so they're going to stick to the "Well, we'll censor it based on how our censor feels at the moment and their individual preferences, and if we don't agree with that later, we'll fire them and make up a new policy" which is what they've been doing for a while.
I don't imagine Facebook would say, allow the Snowden disclosures under pressure from the US, so I don't see how they can claim any moral ground on what they would or would not censor. Everyone hates Nazis, but the interesting cases are beyond that. Never assume a practice run is in good faith.