Banksy started his street art career as a graffiti writer. but one evening after nearly being caught by the cops, decided that he needed to find a quicker, easier way to get his work out. from then on he worked on stencil graffiti which can be found in locations around the world, that comment on social and political issues. his work is mainly in stencil graffiti but he has also branched out into doing installation pieces and has installed his work in museums. where he hangs his art work next to famous art pieces to make a statement about what art is and mocking the traditional bourgeois art culture.

http://www.banksy.co.uk/