A Box With A Hidden Video Camera Documents Journey Through the Mail

There's no way this is legal, at least in the USA.

In the USA, for instance, we have people getting charged with crimes for taking pictures of farms. Farms have a lot less importance to Terrorists than Post Offices. For instance, have you ever heard of a Terrorist lacing a farm with ricin or anthrax? NO! But you have heard of a Terrorist sending ricin and or anthrax in the Post! QED!