Empirically speaking identity politics is about exclusion. This can be seen for what most of the political effort is spend, which is excluding people that are then dehumanised with identity-group-phobe whichunt-labels.
Lets begin with the following: rights are, undeniably a universal concept, they either apply to everybody or nobody.
The people that promote id-pol often speak of identity-group-rights but in reality they mean identity-group-privileges, in the sense of being prioritized. They create semi-formal hierarchies to be enacted via cultural power, meaning that these identities resemble the ranks in traditionalist societies. You can see this in terms of their political demands that require over-representation of said identity-group members.
If this was a socially progressive movement it would argue against discrimination, and it would speak in general equalities, not particularities.
philosophically speaking id-pol is postmodern, which means subjective statements are treated as truth, making this incompatible with science and socialism, which both are projects of modernity. If this was too much jargon postmodernism = treating reality as if it was a RPG(role playing game) and people are like the fictional characters you can select.
Intersectionality drops the concept of class in favour for the concept of oppressions, as such it is a neo-liberal project. Socialism is about abolishing class society, i can't see how this could be compatible, and the reality proves this, as a fight for class liberation is systematically routed out by the id-pol people via the mechanism of labelling identity-group-phobe whichunt-labels.
Also the class composition of the people pushing identity politics, mostly are aspiring for petit bourgeois or labour aristocracy positions, and more often then not act on behalf of these interests.
Race is false consciousness, the fight against racism begins with correcting this error. Also if you (OP) are grouping certain skin tones and ethnic features with disabilities, you are part of the problem. Seriously, black is an identity while down-syndrome is a chromosomal disorder associated with serious health issues. youtube.com/watch?v=ze_6VWwLtOE
Now as far as ability goes, Marx makes this clear you work according to your ability and receive according to your need, in a class less society.
As far as language policing goes, it does not appear to be effective for progressive causes and is usually a sign of conservative politics, ie attempting to conserve the present economic conditions.
Tony Blair is a war criminal, he is complicity in the mass murder of hundreds of thousands of people.
The Blairites privatised British industry, that is a unforgivable crime.
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