Antisemitism has a very long and very ugly history in Christianity.
The Holocaust and pogroms have antisemitism as cause, as obvious examples.
You can see antisemitism in works of Shakespeare with the Jewish financier Shylock wanting a “pound of flesh”. A phrase still commonly used.
You can see it in depictions of Jews in older churches.
On and on I, as well as you, can give many other examples.
So the notion that Jews and Christians are somehow BFE, historically speaking, is BS.
It does, but the reason is not well understood. As usual it comes down to money. For centuries the Catholic Church forbade charging interest on loans. It as the sin of usury, which was decreed to be a mortal sin. So there was no benefit to loaning money, and so the medieval economy remained very static over centuries. There was no prohibition to Jews lending money with interest. However in a static economy paying back as loan with interest was very difficult to put is mildly. This is the very basis of European anti-Semitism.
This does tie into the crusades. Richard I (The Lion Heart) was the great crusader. Wars are expensive and he ran up debts with the Jewish Money lenders. There was a large massacre of Jews on this account in Westminster and especially in York at Clifford's tower.
The reformation ended the prohibition of charging interest in the Protestant countries, and spurred economic development across Europe with the opening of stock exchanges in Denmark and England.
It also set the stage for wars between largely protestant and Catholic countries. Marlborough's wars require special mention. These ended with the treaty of Utrecht signed between 1713 and 1715, and ended the Spanish War of succession. The signing was celebrated in Westminster Abbey, with Handel writing his Utrecht Te Deum. Reports at the time reported "that all was irregular in the music, with Anthems in confusion!"
Fortunately these days it gets a good performance and is a much loved work.
The treaty of Utrecht was also of great consequence to North America and especially Canada.