" Political calculation and local suffering do not entirely explain the participation in these pogroms. Violence against Jews served to bring the Germans and elements of the local non-Jewish populations closer together. Anger was directed, as the Germans wished, toward the Jews, rather than against collaborators with the Soviet regime as such. People who reacted to the Germans' urging knew that they were pleasing their new masters, whether or not they believed that the Jews were responsible for their own woes. By their actions they were confirming the Nazi worldview. The act of killing Jews as revenge for NKVD executions confirmed the Nazi understanding of the Soviet Union as a Jewish state. Violence against Jews also allowed local Estonians, Latvian, Lithuanians, Ukrainians, Belarusians, and Poles who had themselves cooperated with the Soviet regime to escape any such taint. The idea that only Jews served communists was convenient not just for the occupiers but for some of the occupied as well.
Yet this psychic nazification would have been much more difficult without the palpable evidence of Soviet atrocities. The pogroms took place where the Soviets had recently arrived and where Soviet power was recently installed, where for the previous months Soviet organs of coercion had organized arrests, executions, and deportations. They were a joint production, a Nazi edition of a Soviet text.

P. 196 "

― Timothy Snyder , Bloodlands: Europe Between Hitler and Stalin