They do. Not unflagging an important story is just as much censorship as flagging it yourself. And it happens here a hell of a lot.

Try and make a post questioning what stories get unflagged, or asking about moderation logs, or even asking for a debate on the flagging system. It will be rapidly removed; and if you ask for permission it will be denied.

That's censorship, and it has been getting more and more extreme. But you can't post about it - guess why.