This may be a fairly controversial question, but ...
I have known several people on the left (liberals, even radicals) who use the term "politically correct."
I also know a lot of people on the left (with a variety of different specific views) who are offended by the term "politically correct," seeing it as a derogatory way to refer to any attempt by people on the left to advocate for respect for those who differ from the majority. These people on the left tend to have a negative reaction to anyone using the terms "politically correct," or its noun equivalent, "political correctness"; and these people, after hearing anyone use it, are less likely to listen to anything they say.
I agree with the left's goal of respect for minorities and the historically oppressed. I think many people on the right do use the term as a way to attack the left, and as a way to get away with expressing prejudice.
As these quotes from the thread How has the meaning of "politically correct" changed? put it:
There are all kinds of things people say that are a little (or a lot) hurtful in this way. Sometimes, people who like to say these things ("lady doctor", for example) object when they're corrected and say "oh, sorry, guess that's not politically correct" implying that it is, however, just plain correct.
... it seems clear that the vast majority of derisive users of politically correct employ it to caricature and dismiss the views of political liberals.
Non-ironical usage of the phrase soon attracted mocking usage; and in the > past two decades, the phrase has broadened further—first to refer disapprovingly to liberal political views on any subject ...
I also think, though, that there are some on the left who can be rigid and doctrinaire, and sometimes have an us-and-them, with-us-or-against-us attitude. But I don't want to call what I think they can do "political correctness," because I don't want to use the same term as conservatives who use that to attack the entire left and principles of respect and equality.
So--does anyone know of any terms that liberals and others on the left can use, instead of "politically correct," without confusing people about what their meaning and their politics are? Any terms that suggest, "I agree with the principles of the left, I am not a conservative; but I find these particular people, or particular views, to be doctrinaire, strict, with-us-or-against-us, leading to infighting ..."?