Privacy

"We're not going to violate your privacy by opening your mail at the postal sorting center! We're just going to switch from the old system, of posting your sealed letters into the post box, to a new system, of you handing your unsealed letters to a postal worker, who will read them and then seal and send them for you as long as they don't find anything that matches a list of objectionable topics. Privacy protected! Now let's not hear any more silliness about Big Brother!"