Joyce Carol Oates new novel The Sacrifice depicts an act of racial violence which shocks a New Jersey town. Selma dramatises on film the life of Martin Luther King. Timberlake Wertenbaker's new play Jefferson's Garden puts on stage the founding of the American state. Anne McElvoy talks to Joyce Carol Oates and Timberlake Wertenbaker and is also joined by New Generation Thinker Joanna Cohen who studies American history and by Professor Kit Davis from SOAS.