> post-structuralism, postmodernism, critical theory and deconstruction
I've worked in the pre-eminent enemy-of-the-right organisation in Australia, GetUp. I also am/was a postgrad philosopher. I can confidently say I've not heard a single left-wing activist talk about any of those 4 areas in my time working at that organisation, or, truly, in any other activist context.
Additionally, to read these four areas and to then claim that they form the basis of "identity politics" demonstrates a fundamental misreading. Perhaps this misreading is a motivated one.