This week marks 80 years since the liberation of Auschwitz at the end of the Second World War. Representation in literature and cinema of the horrors that took place at Auschwitz is fraught with ethical ambiguities, as is the experience of actually visiting Auschwitz, which many people do today. The place stands as a famous memorial, known to all - and yet, this week's guest fears that the lessons of Auschwitz are being forgotten.