Why are jews the most persecuted people in the world?

ever since religious jews ,and their leaders chanted let him be crucified may his blood fall on us and our sons they have been a people of tragedy,most persecuted.in AD70 roman emperor Nero's militia destroyed jerusalem and jews tered around world.they suffered great persecution from the roman catholics, eastern orthodox,and islam.persecution from other groups (hindus,buddhist etc)have been much less.neverthless a little respite for jews came from protestant reformation of 15th century.but that too didnt last long.crusadersof 11th century chanted kill a jew to get to heaven. Jew was considered a curse in europe in the middle ages.in islam prophet muhammed initiated the killing of jews,by asking about a group of 1000 jews to dig their own graves and after that beheading them.like lambs they stood there for us to persecute them.it culminated in nazi killings of 6 million jews in WW3.after that jewish persecution still continues mainly by munists and muslims.shouldnt this stop?!!