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In page Czesława Kwoka:

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Most of these children "arrived in the camp along with their families as part of the various operations that the Nazis carried out against whole ethnic or social groups"; these operations targeted "the Jews as part of the drive for the total extermination of the Jewish people, the Gypsies as part of the effort to isolate and destroy the Gypsy population, the Poles in connection with the expulsion and deportation to the camp of whole families from the Zamość region and from Warsaw during the Uprising there in August 1944", as well as Belarusians and other citizens of the Soviet Union "in reprisal for partisan resistance" in places occupied by Germany.[1]