The King will today implore the world to "challenge prejudice and never to be a bystander in the face of violence and hate" as part of the 80th-anniversary commemorations of the liberation of Auschwitz . Charles will meet locals in Krakow at a Jewish charity event before joining world leaders and survivors returning to the former Nazi death camp. Royal sources said the King's visit will hope to "articulate how the testimony of survivors teaches us". In a moving speech, Charles will warn that