70 years ago today, on Januray 27, 1945, Soviet troops liberated the most notorious Nazi death camp, Auschwitz-Birkenau. The hugely symbolic date of the Red Army’s rescue of survivors has been forever memoralzied and designated as the Internaital Holocaust Rememberance Day. In celebration of the liberation, and their perservance nearly 300 survivors of Auschwitz-Birkenau returned to the site where they bared witness to atrocities, and took part in the emotional and moving memorial event.

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Igor Malicki of Ukraine, a survivor of the former German Nazi concentration and extermination camp Auschwitz visits the camp in Oswiecim on January 26, 2015. Reuters
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Visitors walk inside the former German Nazi concentration and extermination camp Auschwitz in Oswiecim on January 26, 2015. Reuters
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Igor Malicki of Ukraine, a survivor of the former German Nazi concentration and extermination camp Auschwitz visits the camp in Oswiecim on January 26, 2015. Reuters
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Picture shows a general view of the former Nazi German concentration and extermination camp Auschwitz in Oswiecim. Reuters
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Jack Rosenthal of the U.S., a survivor of the former German Nazi concentration and extermination camp Auschwitz, shows his camp number tattoed on his arm as he visits the camp in Oswiecim on January 26, 2015. Reuters
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A survivor of the former German Nazi concentration and extermination camp Auschwitz reacts as she visits the camp in Oswiecim. Ceremonies to mark the 70th anniversary of the liberation of the camp will take place on January 27, with some 300 former Auschwitz prisoners taking part in the commemoration event. Reuters
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A sign with block number is pictured on a building in the former Nazi German concentration and extermination camp Auschwitz. In Auschwitz, Nazis killed at least 1.1 million people, mainly Jews, but also Poles, Roma, Soviet prisoners of war and prisoners of other ethnicities. Reuters
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Mordechai Ronen of Canada, a survivor of the former German Nazi concentration and extermination camp Auschwitz cries as he visits the camp in Oswiecim on January 26, 2015. Reuters
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A sign is pictured at the perimeter of the former Nazi German concentration and extermination camp Auschwitz. Nazi Germany built the Auschwitz camp in 1940 as a place of incarceration for the Poles. From 1942, it became the largest site of extermination of the Jews from Europe. Reuters
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Visitors walk through a museum in the former Nazi German concentration and extermination camp Auschwitz in Oswiecim on January 26, 2015. Reuters
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Members of Polish Scouting Association from Canada and U.K. stand in front of the block 15 in the former Nazi German concentration and extermination camp Auschwitz in Oswiecim on January 26, 2015. Reuters
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Mordechai Ronen of Canada, a survivor of the former German Nazi concentration and extermination camp Auschwitz reacts next to the World Jewish Congress President Ronald S. Lauder as they visit the camp in Oswiecim on January 26, 2015. Reuters
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Survivors of the former Nazi German concentration and extermination camp Auschwitz stand at the gate of the former camp in Oswiecim on January 27, 2015. Reuters
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Pictures of prisoners who died are displayed on the wall inside at the former German Nazi concentration and extermination camp Auschwitz in Oswiecim January 26, 2015. Ceremonies to mark the 70th anniversary of the liberation of the camp will take place on January 27, with some 300 former Auschwitz prisoners taking part in the commemoration event. Reuters
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Igor Malicki of Ukraine, a survivor of the former German Nazi concentration and extermination camp Auschwitz visits the camp in Oswiecim on January 26, 2015. Reuters