Survivors and personnalities sit by the glas covered railtracks during the main ceremony to mark the 70th anniversary of the liberation of the Auschwitz death camp on January 27, 2015 at a tent build in front of the entrance of 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 / ODD ANDERSEN