Like Chainsaw, plenty will be disgusted by such a nihilistic movie (take a bow, Funny Games), but as Oscar Wilde said, art is neither good nor evil, just well or badly made.

But here’s the most interesting thing about the movie; there’s hardly a word of swearing (in fact, Bettie scolds a colleague for the language in a bawdy song), no blood, no violence, hardly even a raised voice, yet the film’s rated MA. Have we really come so far in 50 years?

It doesn’t feel like a Michael Moore movie, with little of his cult-of-personality showboating. There are several ultimately pointless musical acts and it gets a little repetitive, but the editing manages to generate a sense of slowly building hope which history reminds us wasn’t enough to spare us from Bush’s second term.