Auschwitz survivors warned Monday of the rising antisemitism and hatred they are witnessing in the modern world as they gathered

Auschwitz-Birkenau, the Nazis' largest death camp, witnessed unimaginable horrors, where 1.1 million people, mostly Jews, were murdered. Survivors gathered on International Holocaust Remembrance Day,

Some of the few remaining survivors of Auschwitz-Birkenau have returned to the Nazi-German concentration and death camp, condemning a "huge rise" in antisemitism on the 80th anniversary of its liberation.