Jan Maletka (1921-1942) was a Polish railway worker. On 20 August 1942 he was murdered by the Germans for providing water to Jews being transported to the Treblinka concentration camp.^[1] On 26 November 2021 a plaque commemorating him has been revealed in the village of Treblinka, which has sparked a controversy.^{[2][3][4][5][6][7][8][9]}