Marxism came up when I was researching Feminism. The article stated "The second wave was increasingly theoretical, based on a fusion of neo-Marxism and psycho-analytical theory, and began to associate the subjugation of women with broader critiques of patriarchy, capitalism, normative heterosexuality, and the woman's role as wife and mother." Marxism is about creating all equal so it would make sense that feminism would have some marxism theory behind it.