Overview:Internationally known graffiti artist, Banksy, left his mark on San Francisco in April 2010. Little did he know that this act of vandalism would spark a chain of events that includes one of his rats being removed from a wall, Museums ignorantly turning down a free Banksy street work, and a NY gallerist who has made it his business model to remove Banksy street works from all over the globe doing whatever it takes to get the rat in his possession.