The London Metropolitan Police have initiated an ad campaign asking citizens to report odd people taking photos. They're looking for terrorists not paparazzi, but the ad has appropriately inspired remixes, which are being compiled at Boing Boing. I love when people show fear mongering for the absurdity it is with parody.
Here's the original:
Here's an example of a remix:
And, of course, there is an LOL cat version at Boing Boing.