Bereza Kartuska – town currently located in Belarus, before the war within the Polish borders, in which in 1934 the Polish authorities set up detention camps. The Polish President Regulation on individuals threatening the peace and public order allowed for the detention of the suspects at the camp for three months with the possibility of extension for the next three months without trial merely by an administrative order. The first prisoners of the camp were members of the Polish nationalist organization National Radical Camp (ONR), suspects of organizing the assassination of the Minister of Internal Affairs Bronislaw Pieracki. Bereza prisoners were mostly members of radical political organizations: the Communists, Ukrainian nationalists, members of the ONR. Conditions in Bereza were very heavy; prisoners were beaten and mistreated.
The term was created within the framework of the project Zapisywanie świata żydowskiego w Polsce [recording the Jewish environment in Poland], whose author is Anka Grupińska, a well-known Polish journalist and writer, specializing in the modern history of the Polish Jews. The project, initiated in 2006 by the Museum of the History of Polish Jews, consists in recording interviews with Polish Jews from all generations.