AL Kennedy on why Hollywood has never been a nice place.

In 1919, barely three decades after the advent of moving pictures, Charlie Chaplin, Mary Pickford and others thought things were bad enough in the studio system to break away and form an independent creative producing collective, United Artists. There are many other examples of Hollywood's woes in the C20th.

But in this time of political instability, Alison writes, "don't we need entertainment to get everybody through, aiming higher?"

Producer: Adele Armstrong.