The Iași pogrom or Jassy pogrom of June 27, 1941 was one of the most violent pogroms in Jewish history, launched by governmental forces in the Romanian city of Iaşi (Jassy) against its Jewish population, resulting in the murder of at least 13,266 Jews, according to Romanian authorities.
http://military.wikia.com/wiki/Ia%C8%99i_pogrom https://en.wikipedia.org/wiki/Victims_of_Ia%C8%99i_Pogrom_Monument