I snapped the above photo in downtown Manhattan a month or so ago. There were several stone rectangles around the property that all looked similar. What a great example of the subconscious art of grafitti removal! If you are unfamiliar with the art form, see this short film from 2002 directed by Matt McCormick:
We cited this art movement for one of the Subway Art Gallery placards. “Subconscious Art…” is one of my favorite short films; I’m so happy it’s online in its entirety!