First of all, let us let go of certain myths.
If we listen to the Jews, they try to sell us the myth that only they were the victims of Hitler hate, when Hitler was in fact and equal opportunity bigot and did much of the same things to Gypsies, Slavs and many other minorities.
But Europeans who imported large numbers of Muslims to do their dirty work when their economies were booming, quite actively discriminate against their Muslims minorities then and now. Its especially bad for Turks in Germany now.
But its somewhat the natural results of bigotry the world over, especially when skin color makes the selection visually easy. Religious tolerance is only one factor, but pair religion with economic discrimination and the issue becomes both socially corrosive and explosive in any society. Especially when young people growing up spend their first 20 years of life being the undeniable victims of bigotry.
And maybe what is really rotten in Europe, is when the bigger Muslim minority finds they can't ever be first class citizens in a land they were imported into, they can take some small solace in making some even smaller minority into third class citizens.
Its a rotten piece of human nature none of us can or should condone, but we can at least understand, if we condone any bigotry in any form, what goes around, may come back on us.
And I find it quite amazing that pro Israeli fab clubbers are super quick to condemn European antisemitism, but are seeming absolutely clueless, that when the Nation of Israel engages in its long standing policy of systematically brutalizing its Palestinian captives, that some of that Israeli brutality will unfairly but inevitably fall on Jews living in other nations.