US director Steven Spielberg (C) is pictured on the sidelines of the unveiling of a plaque at the former Auschwitz concentration camp on January 27, 2015 at the camp's memorial site in Oswiecim, Poland. Seventy years after the liberation of Auschwitz, ageing survivors and dignitaries gather at the site synonymous with the Holocaust to honour victims and sound the alarm over a fresh wave of anti-Semitism. AFP PHOTO / JANEK SKARZYNSKI