‘Art is dead,’ declared Mark Steyn recently. He was referring to the new rules — copied from the Baftas — whereby to qualify for the Oscars your movie must have the correct quota of gay/ethnic minority/transgender/etc people. This, he argued, will lead to the kind of leaden, politicised, phoney art we associate with communist regimes in the Soviet era and which, not so long ago, we used to find eminently mockable.