According to this Hyperallergic blog post citing an anonymous source, someone in New York City paid someone else to plaster the building where photographer Jay Maisel lives with posters featuring an adaptation of Maisel's iconic Miles Davis photograph.
Over a pixelated reworking of the photo, the text, "All Art is Theft."
Short version of the backstory: Maisel recently threatened Andy Baio with legal action over Baio's similarly adaptive use of this same photo for Baio's "Kind of Bloop" 8-bit homage, and Baio ended up having to pay Maisel $32,500 to settle the matter.
(via Anil Dash)