I think "identity politics" are actually just an artefact of commercially driven manipulation of government and media.
If you were to really get to know most people, you will find they have (obviously) the same basic needs and desires. Amusingly, this is even illustrated by the large percentage of Trump supporters who are heavily dependent upon government services (i.e. handouts).
At the end of the day, we all want food, shelter, safety, and some amount of personal privacy and freedom. These things probably comprise at least 70% of our needs and desires. The remaining bits get divided up somewhat, and I daresay only the last 10-20% are "identity". Identity really just means what you and your peers/neighbors think.
Nobody wants to be sick, or hungry, or in pain, or unappreciated, or discarded. Much of the politics we see is thrust upon us by a narrow few (powerful) interests with their own agendas.