Poland's President Bronislaw Komorowski (C) and guests walk in a procession to light candles on a memorial for the victims after the main ceremony to mark the 70th anniversary of the liberation of the Auschwitz death camp on January 27, 2015 in the former Nazi concentration camp Auschwitz-Birkenau in Oswiecim, Poland. Sevent 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