I saw this image somewhere on Tumblr. I clipped it (presses it to be more precisely, using a WordPress snipped of code) as a draft post for future use here. Then it disappeared from Tumblr, but using search image of Google i got this search result from Google. Nifty! You just drop your image in the search box and see who has written about it.
Through Zuza Fun and Scary Ideas I learned this to be part of a CLM BBDO agency campaign for a newspaper, Metro News: Think For Yourself! It demonstrates even ad agencies can create street art. Love it!