Kliph Nesteroff is the author of the book The Comedians, a gossipy, scandalous, irresistibly written history of the underside of the development of American stand-up comedy. But although you get all sorts of juicy details along the way (the Mafia figure prominently) it does also provide an excellent overview of how the form evolved in America and is hugely enjoyable. His new book, Outrageous, overlaps to some extent, as comedians feature prominently, but its focus is on the culture wars in the US - far from a recent phenomenon, as Mr Nesteroff reveals. He starts in the 1800s with a discussion about blackface, and the many protests by successive immigrant groups - Irish, Jewish, Italian, among others - to stereotypical depictions by comics. The long-running Amos 'n' Andy radio show had two white performers playing black characters whose personae had been stolen from two black performers, who were never remibursed; when, much later, it moved to TV there were black actors surrounding the two stars, and despite protests from the NAACP those actors defended the show on the grounds that without such programmes, demeaning as they were, there'd be no work for them at all.