Can't really speak to anti-semitism. But more generally, I do have an issue with political groupings as a whole, how imprecise they are, and how they promote attacks on individuals and/or the group itself instead of ideas.
I mean, think about the umbrella that is "liberal" or "conservative." Think about how many different demographics fall under each. Should a Texas rancher and Wall Street business mogul be described using the same terminology? Should an anti-war protesting hippie and a middle class urban school teacher? And could you craft a policy platform to please them both? Possibly, but only if they both idealize the party affiliation over their actual interests. Hundreds of examples like that could be found.
I'm of the debate philosophy that you pull zero punches, but separate argument from individual and attack only the idea. But when it comes to identity politics specifically, it's hard to find anyone who doesn't conflate certain ideas with their self-image. So an attack on the former is an attack on the latter. Cue rants and rage, and watch as it spirals and compounds on itself.
It's like trying to use the term millenial unironically to describe anything. By most definitions, it includes kids waiting to have their first legal drink, and early 30-somethings who could easily be on their 10th job, 3rd kid, 2nd mortgage, etc. Tell me that sh*t is one demographic with a straight face. It isn't; it's just a marketing buzzword, but we eat it up, attack it or embrace it to suit our needs.
So it's not that I'm espousing a centrist view on whatever topic. But yeah, f*** political labels and the way they dumb down our national discussion of nearly anything.