> They do not coerce anyone by exercising that power, though.

It's muuuuuuuuch worse than that. They actually hire people (20000 if I trust my local media) to actually "clean" facebook. So it means that facebook defines what is socially acceptable and what is not. And, contrary to the law, the definition is not written, not shared. I'd prefer physical coercion (normally attributed to police) any time.