On the "Jewish Question" and its status within marxist discourse esp. as related to analysis of the Holocaust, see the volumes by Italian Trotskyist, Enzo Traverso from Humanities Press, the Verso vols. from N. Geras and Ron Aronson.
This book, I have not seen could be good too. http://www.google.com/search?q=Stalin+Against+The+Jews
As well, as this which I skimmed, on an exiled US Communist family in Czechoslovakia after the anti-semtic Slansky purge trial in '52. Ann Kimmage, is the authors name. Michael Pugliese P.S. For sick entertainment only, fascist website, JewWatch.