Well, before throwing rocks on our Slav brothers learn your own history first:
Though northeastern Russia had few Jews, countries just to its west had rapidly growing Jewish populations, as waves of anti-Jewish pogroms and expulsions from the countries of Western Europe marked the last centuries of the Middle Ages, a sizable portion of the Jewish populations there moved to the more tolerant countries of Central and Eastern Europe, as well as the Middle East.
Expelled en masse from England, France, Spain and most other Western European countries at various times, and persecuted in Germany in the 14th century, many Western European Jews naturally accepted Polish ruler Casimir III the Great's invitation to settle in Polish-controlled areas of Eastern Europe as a third estate, performing commercial, middleman services in an agricultural society for the Polish king and nobility between 1330 and 1370, during Casimir the Great's reign. Approximately 85 percent of the Jews in Poland during the 14th century were involved in estate management, tax and toll collecting, money lending or trade
Jewish position in Slavic countries went from good to bad because of German rulers of Russian Empire Catherine II or Sophie Friederike Auguste von Anhalt-Zerbst-Dornburg. She took away many Jewish freedoms enjoyed under Slavic kings. I am not saying not a single bad think ever happened to Jews in Russia but here we have accusation without going deeper in research.