Back when the United States was primarily dominated – both in numbers and in culture – by the WASPs, a strange paradox emerged which has remained with us ever since: whatever has passed during a given period as popular entertainment for the Sons of Puritans has been dominated by three marginal elements – blacks, Jews and Catholics. It was true when Vaudeville reigned supreme; it was true as the flickers began their long march via the silent films into sound and then colour movies; and it is true in the age of the internet.