Loyal Citizens of D.C.!

In the proud tradition of those Orwellian British posters touting London's surveillance cams, this this Articulatory Loop post shows a poster on the D.C. MARC commuter train:

Addendum: If you click through to the AL post comments, there's reason to think the poster's a prank of some sort, not produced by MARC or any other gov't agency. I'm amused either way, but there's a good chance it's bogus.