People who are part of the dominant group (often rich, white, WASP, male in American history) do stuff that is biased.
People try to remove that bias.
The first group attacks that as "political" because when they do it, they don't consider it political.
"Political correctness" is what the other side does, not hounding the Dixie Chicks for speaking out against war.
"Identity politics" is something only minorities do, not the KKK etc.
Now, political science is bad when they do it, we don't do political science, please ignore the several hundred years of history behind the curtain.
This whole argument is the "red team" strategy that the Trump admin was pushing for climate change, and previously "teach the controversy" in evolution. It's just stalling from people who have lost the argument presented as balance.