The Gang of Four

S1 E1: In the first episode of this innovative BBC arts documentary, Waldemar Januszczak delves into the back stories of four of the most influential Impressionists - Pissarro, Monet, Renoir and Bazille. He discovers how they broke conventions by depicting everyday encounters and familiar sights, to the shock of many. But what social and cultural influences drove them to this style of painting?