"Red Friday": Testimony of an unknown person regarding the burning of the Jewish Quarter in Bialystok, 23 June 1941 Occupation of Bialystok by the German Army, 23 June 1941; riots in the Jewish Quarter conducted by Germans including the throwing of grenades, pouring of fuel and setting fire to houses; burning of the synagogue including the Jews inside the building; deaths of approximately 1,700 Jews from smoke inhalation or the fire; burning of more than 30 streets in the Jewish Quarter; destruction of 10 "Batei Midrash" (religious study halls) ; destruction of the Great Synagogue.