January 27 is International Holocaust Remembrance Day, designated as such by the United Nations.

On this date in history, Jan. 27, 1945, the infamous Nazi German slave labor and death camp,

Auschwitz-Birkenau, was liberated by the Soviet army.

The day recalls the killing of six million Jews as well as millions of other people by the Nazi regime and collaborators.

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But there are scores of interconnected stories as well.

"During the Holocaust," wrote Richard Hurowitz in a recent essay in The Wall Street Journal,

citizens from Denmark to Greece protected their Jewish neighbors from the Nazis by standing together." 

Remembering the horrors of war — and chronicling how brave people, in the face of fear, brutality and cruelty,