That's what I was saying. When the surrounding powers got sick of their shit, the Khazarians pretended to convert to Judaism in order to pass under the radar from that point on. They became "fake" Jews, actively integrating deeply into European Jewish society, while on the down-low continuing their Baal-worshiping, child-sacrificing ways that made everybody hate them in the first place.

The "real" Jews would then be all the other pre-existing Jews who had nothing to do with Khazaria, but now found themselves in the same group as all these new Khazarian "converts."

But Jewish in-group identity was strong enough that from outside, the Khazarian fucktards doing dastardly deeds was just seen as "what Jews do," while from inside there wound up being a tendency to avoid airing their dirty laundry to outsiders and instead publicly defending all Jews, while trying to deal with (what was seen as) the occasional miscreant as quietly as possible.

TL;DR: The Khazarians infiltrated Judaism. The history of Jews being repeatedly blamed for all sorts of horrible things is because the hidden Khazarian faction is still doing all sorts of horrible things and don't care if all Jews as a group get blamed for it.