Art has long been a form of protest that can inspire millions to the artist's cause, writes David Lister . Hockney's latest campaign shows how art can elevate protest far above what politicians can ever hope to achieve David Hockney’s impassioned protest in The Independent yesterday against the Bayeux Tapestry being moved from its home in Normandy to the British Museum for nine months might seem out of character to those who only associate Britain’s greatest living artist with his vibrant,