The "Żydokomuna" sentiment reappeared at times of severe political and socioeconomic crises in Stalinist Poland. After the death of Polish United Workers' Party leader Bolesław Bierut in 1956, a de-Stalinization and a subsequent battle among rival factions looked to lay blame for the excesses of the Stalin era. According to L.W. Gluchowski: "Poland’s Communists had grown accustomed to placing the burden of their own failures to gain sufficient legitimacy among the Polish population during the entire Communist period on the shoulders of Jews in the party." "(See: above.)" As described in one historical account, the party hardline Natolin faction "used anti-Semitism as a political weapon and found an echo both in the party apparatus and in society at large, where traditional stereotypes of an insidious Jewish cobweb of political influence and economic gain resurfaced, but now in the context of 'Judeo-Communism,' the Żydokomuna." "Natolin" leader Zenon Nowak entered the concept of "Judeo-Stalinization" and placed the blame for the party's failures, errors and repression on "the Jewish apparatchiks." Documents from this period chronicle antisemitic attitudes within Polish society, including beatings of Jews, loss of employment, and persecution. These outbursts of antisemitic sentiment from both Polish society and within the rank and file of the ruling party spurred the exodus of some 40,000 Polish Jews between 1956 and 1958.