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How many people were murdered at Auschwitz?

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The Nazis murdered between 1.1 million and 1.3 million people at the Auschwitz concentration camp complex. The overwhelming majority of these victims were Jews, though the camp also claimed the lives of Roma, Slavs, and other groups targeted by the Nazi regime.1

Auschwitz was the largest and most lethal of the Nazi extermination camps, utilizing the cyanide-based pesticide Zyklon-B to carry out mass murder on an industrial scale. The camp operated as both a killing center and a slave-labor site until it was reached by Soviet troops in January 1945.12