Banksy is back in New York. The UK street artist has peppered the US city with several politically outspoken works since last Thursday (15 March) and keen-eyed New Yorkers have been tracking his work through social media.

The first to be noticed, and certainly the largest thus far, is a 70-foot mural at the corner of Houston Street and the Bowery that protests the imprisonment of the ethnic Kurdish artist and journalist, Zehra Dogan.

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