Marxism has been replaced with Cultural Marxism, which is part of Critical Theory (remember, Obama taught Critical Race Theory while a lecturer at Univ of Chicago.)
Herbert Marcuse in 1965 wrote "Represive Tolerance." Here is a sample:
The small and powerless minorities which struggle against the force conciousness and its beneficiaries must be helped. There continued existence is more important than the preservation of abused rights and liberties which grant constitutional powers to those who oppresed these minorities.
Social justice, neoprogressivism, feminism and post-colonialism, to name but a few, are all momvements born out of critical theory and thus come under the umbrella of Cultural Marxism. Be its agenda family, sexual orientation, race, culture or religion, every aspect of a persons identity questioned, every norm or standard of a society challenged and ideally altered in order to benefit supposedly oppresed groups.
Classical Marxism saw class conflict between the bougiosie and the proletariet, the haves and the have nots. Cultural Marxism sees that conflict between the oppersers and the opperessed. Those with priveledge and those without it. The working class has been replaced by minorities. The majority group is labeled the oppressors and the minority group the oppressed. Heterosexuals are oppressive, one-gender people are oppressive, whites are oppressive (especially white men), Christians are oppressive. Those that don't fit into these groups are thus considered oppressed.