Banksy became widely known for making works of art appear out of nowhere and that challenged systems of power. Originally a street artist famed for his graffiti style, Banksy also makes works that appear in museums. In this case he modified a 19th century plaster cast of angel, splattered it with pink paint and placed the empty bucket over the head of the sculpture. 

The intension is to challenge what people expect to see in a museum like this and question the value we place on art.

He displayed this work amongst the museum collections during the 2009 exhibition Banksy vs. Bristol Museum, after which he donated it to Bristol Museums, Galleries and Archives.