The first instance of armed resistance took place on January 4, 1943, at the so-called Large Ghetto established by the Germans in April 1941. During the 'selection' of some 500 Jews to be deported to the ghetto in Radomsko, shooting broke out at the Warsaw Square (Ghetto Heroes Square) in which Mendel Fiszelewicz (Fiszelowicz) along with Isza Fajner were killed. 50 young Jews were executed in reprisal.