Stephen Sackur talks writer Alan Moore. In the past he has championed graphic novels for their effect on politics and culture. Why, in that case, is he now becoming disillusioned?

Alan Moore is the man behind the mask, the mask worn by computer hackers and Occupy protestors the world over. But he's no typical insurgent, rather a graphic novelist. It was he who dreamt up the anarchist superhero with the ghostly, bearded mask, whose face has now become perhaps the symbol for subversion. Alan Moore has, in the past, championed graphic novels (book-length comics) for their effect on politics and culture. Why, in that case, is he now becoming disillusioned?