@Rasterman Jews lied to Christians by pretending to be just another denomination of Christianity. It wasn't until the Disputation of Paris in 1240 that a jewish convert told Christians what was actually written in the Talmud. That's where all the expulsions followed and the number of Ashkenazi jews was reduced to 300 individuals. It was Poland who took them in and gave them rights (Statute of Kalisz 1264), otherwise Ashkenazi jews would've been exterminated by Christians.
Real Christians after learning about the Talmud never treated jews well (understandably) it was secular powers that took them in to profit from their money lending.