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Several works around the city have been defaced with a his trademark red smile painted on top of existing faces, with the word's \"Joker\" scribbled next to it.
Renegade street artist Joker strikes again. Somehow knows where new art pieces are going up. #InsideIran pic.twitter.com/W6KwPA2riI
— Muhammad Lila (@MuhammadLila) October 30, 2013
The effect looks like lipstick, similar to the way Joker from the comic books would have written his name.
What makes the Joker's work more mysterious isn't just what he does, but how quickly he does it. In a city where street art can last for just a few days before city workers paint over it, the Joker has been able to get to and deface some pieces before city officials find out where the pieces are.
It has some in the fledgeling street art community worried that the Joker's real identity might be an even bigger threat: He could be one of their own.
Follow along on our live blog and #InsideIran on Twitter.
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