"""Photo - FILE - This undated file photo provided by the Museum of the City of New York shows graffiti-covered subway cars parked in a  New York City rail yard. Graffiti is the subject of an exhibition opening on Feb. 4, 2014 and running through Aug. 24 at the Museum of the City of New York. """"City as Canvas: Graffiti Art from the Martin Wong Collection"""" is the first exhibition of the collection of graffiti art amassed by artist and pioneering collector Martin Wong in the 1970s and '80s. (AP Photo/Museum of the City of New York, Camilo Jose Vergara, File)"""
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