A sign reading "Stop!" in German and Polish is seen at the former Nazi German concentration and extermination camp Auschwitz, during the ceremonies marking the 73rd anniversary of the liberation of the camp and International Holocaust Victims Remembrance

A sign reading "Stop!" in German and Polish is seen at the former Nazi German concentration and extermination camp Auschwitz, during the ceremonies marking the 73rd anniversary of the liberation of the camp and International Holocaust Victims Remembrance Day, in Oswiecim, Poland, January 27, 2018.

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