British PM says he saw 'sheer horror' at concentration camp which saw industrial-level killing as a 'collective endeavor by thousands of ordinary people'

By Barbara Erling and Kuba Stezycki OSWIECIM, Poland (Reuters) -Auschwitz survivors warned of the dangers of rising antisemitism on Monday, as they marked the 80th anniversary of the liberation of the Nazi German death camp by Soviet troops in one of the last such gatherings of those who experienced its horrors.

Auschwitz survivors warned Monday of the rising antisemitism and hatred they are witnessing in the modern world as they gathered with world leaders and European royalty on the 80th anniversary of the death camp's liberation.