> Intersectionality is still used primarily, in practice, to promote the interests of higher classes against lower ones.

I don't follow what this means? How does one 'use' intersectionality to promote interests? I thought intersectionality was the idea that intersections of identities have different experiences than the components.

Ex: Black women have experiences that are unique to that intersection of identity, which aren't experienced by people who are only one of women or Black.