<human>:  I heard of this artist called Banksy. Can you tell me about him and his work? 
<bot>: Banksy is a pseudonym used by a British artist, known for his political and social commentary street art. His works often feature subversive and darkly humorous visuals, such as rats and satirical images. His works often appear on public surfaces such as walls and streets, and have become popular as urban artifacts. Because Banksy obscures his identity and refuses to reveal his true identity, his work has become part of a larger movement of anonymous artists who use public spaces to make political statements. Banksy's work has earned him international recognition and acclaim, with many calling him one of the most influential street artists of the 21st century.