First, whenever the Jews moved into an area (such as those in Europe), they set themselves apart in particular ways. The ways in which they lived said to the indigenous population (in Europe, Catholics and later all types of Christians):
1) Your children are not good enough for my children (no social contact or intermarriage)
2)Your food is not good enough for me (we only eat kosher food), and
3) Your God is not good enough for me (We consider Him a false prophet)
Now that alone would be enough to invite anger from the population, but the Jews made it worse. How? Because they were successful intellectually and economically. Just my opinion...
Very carefully thought out. Thank you.
As an example in another part of the world, look at the ethic Chinese in Indonesia. Disproportunately successful. Of a different religion than the majority Muslims. Of a culture that valued education and hard work. Kept themselves separate. They were disproportionately slaughtered in 1965 (The Year of Living Dangerously) and subjected to pogroms other times