January 27 marks the Holocaust Remembrance Day, an international day of commemoration for the 6 million Jews murdered by the Nazis and the anniversary of the liberation of the Auschwitz-Birkenau concentration camp in 1945.

International Holocaust Remembrance Day: Yad Vashem opens “The Book of Names” at the UN
A Day—or Two—to Remember the Holocaust
Behind the Picture: The Liberation of Buchenwald, April 1945
Opinion: A Holocaust remembrance — and lessons we have yet to learn