Conflict between the "haves" and "have nots," is the basis for Marxism. He called it "class struggle."
Pelosi, Ellison, Sanders and others use it almost daily. (as do assorted Kennedy's, Clintons, Obamas, etc)
Women's rights (equality), black lives, tax the rich, free college, ad infinitum.
Wash, rinse, repeat. Karl Marx resided in London, much of his life.