It...kinda is a chip. Sort of.
Antisemitism is in everything, and once you start looking for it you will never stop.
It is in Christianity -- the Catholic Church, yes, I feel like I don't really need to get into the antisemitic history of the group behind the Spanish Inquisition, but Martin Luther was one of the most influential antisemites in Europe, and a direct line of thought can be traced from his ideas to Hitler's.
It is in Islam -- which says that the day of judgment will come only when the Muslims kill the Jews (and also apparently one type of tree will hide us as the others are ratting us out because that type of tree is Jewish, which is weird).
Those two religions are followed by a majority of people in the world. In the West, most people grow up in a vague culturally Christian hegemony, even if they're not actively Christian.
The Corpus Juris Civilis has had massive consequences and underpins many legal systems today. It is foundational in so much Western law.
It also codified the principles that Jews weren't citizens, that we couldn't testify in court against Christians. It banned Hebrew prayer and conversion to Judaism.
So many famous people were deeply antisemitic. Ezra Pound was a Nazi, yeah, but it's just...everywhere. I've talked about Bram Stoker a lot, but it's also other people: Shakespeare, Voltaire, Jonathan Swift, Tolstoy, Gandhi, Cicero, Oscar Wilde, a random "humorous" book of joke definitions that I was only able to read through the AR's because it said Arson was derived from the Hebrew (see Insurance) or something which references the myth that Jews set fire to things for the insurance money. It is all over literature and cabals come from kabbalah and hip-hip is from the chant of the rioters in Germany and Denmark as they attacked Jews for daring to maybe want some rights and you try to go into botany and are confronted with the Wandering Jew plant and and and.
And to undo that would require serious, concerted, effort that would almost certainly make Christian and Muslim students uncomfortable, and that just didn't happen. There was some reckoning in Germany, imposed upon them.
Nowhere else. Antisemitism didn't go away, it just went underground, and we patted ourselves on the back and thought that this time we would be safe and this time we'd finally be able to settle down and it's starting to look like we were wrong.
There are two thousand years of antisemitism screaming to blame the Jews for being capitalist or communist or loyalist or revolutionaries or xenophobic or xenophilic or white or nonwhite or liberal or conservative or rich or poor or this or that or whatever they think makes us worthy of being killed that they apply to us and only us, and not even eighty years of kinda sorta sometimes thinking that was bad.