Przeciw swoim: Wzorce kolaboracji żydowskiej w Krakowie i okolicy

This article attempts to define collaboration with the Nazis and the most commonly used terms both in archival sources and literature. Furthermore, cases of individual collaboration with the Gestapo are discussed. One of the typical routes that led to collaboration was the involvement of Jewish policemen, who followed more and more controversial German orders during deportations, and thus underwent a process of brutalisation and an increasing dependence on their German bosses. This article analyses modes of informers' activity in the Cracow area as well as in Hungary, which led to arrests of Jews living in hiding or under false names on the “Aryan” side. It also shows the economic exploitation of the needy and the fate of the victims arrested as a result of denunciation. The article's conclusion contains an analysis of the causes and motivations of Jews involved in the treacherous business of denunciation of fellow Jews to undertake collaboration with the Gestapo.