I define it as an evil cult. Some will claim it's a race, but that's only if you accept the Ashkenazi represent all of Judaism, and there's clearly all kinds of different groups mixed in there. If you were to claim there's only one true group of biological Jews, the Ashkenazi would likely not be it either.

Even if you're going to pull the diaspora card, this one sub-group called Ashkenazi seem to have hijacked the whole thing nowadays and dwarf out the other diaspora groups or whatever you want to call them. Then you also have the Hofjuden who intermarried with European royalty.

The only two real words to describe this thing are either cult or tribe. Tribe is a loose affiliation of people where they probably have some form of homogeneity or ethnocentric majority, but are not actually required to all be of the same race or related really. People can come and go from a tribe or cult at any time.

The other option is of course mafia: people who are affiliated solely for criminal activities -
which does apply to many Jews in finance and things like human organ trafficking. Then as soon as anyone attempts to confront them, all of the useful idiot Jews who are not financial criminals (all 2 of them) start spamming "remember the 6 trillion!" and cover for them.

But if it's built into their doctrine that they're the "chosen ones" and the "goyim" are cattle slaves, then it's not simply a sub-group mafia problem, but anyone self identifying as Jewish would be part of an evil cult as far as the outside world is concerned, and would have to be destroyed before they destroy you. Sort of like "the borg" from Star Trek.

It's clear screwing over "the goyim" for personal gain is sanctioned in many texts of Judaism, whether it's dealing with usury or other things, so nobody should really self identify as Jewish unless they want people to see them as hostile attackers in the first place. Just like you should probably be sort of suspicious of any highly fundamentalist, religious muslim, since it seems like they're required to kill or convert you.