Artworks created by the mysterious British street artist Banksy have been appearing in various locations in the city after he announed a a month-long residency in New York City. Banksy is a pseudonymous England-based graffiti artist, political activist, film director, and painter. His satirical street art and subversive epigrams combine dark humour with graffiti using a distinctive stencilling technique. His artistic works of political and social commentary have been featured on streets, walls, and bridges of cities throughout the world. Banksy’s artwork, when removed from its always pre-existing urban settings, has sold for hundreds of thousands of dollars at auctions. The artist has not shown his face or revealed his identity, aside from a shadowed interview in which his voice was altered in the award-winning biographical documentary, "Exit Through the Gift Shop." Some of the pieces created here in New York City include "Concrete Confessional" in the East Village and a truck filled with stuffed animals with amplified toy animal noises called "Sirens of the Lambs" to highlight animal cruelty and factory farming.