Critical feminists – radical feminists, Marxists, and socialists – are keen to stress the need to dispense with masculine systems and structures. Radical feminists see the roots of female oppression in patriarchy, perceiving its perpetrators as primarily aggressive in both private and public spheres, violently dominating women by control of their sexuality through pornography, rape (Brownmiller 1975), and other forms of sexual violence, thus imposing upon them masculine definitions of womanhood and women's roles, particularly in the family. Marxist feminists, (Rafter & Natalizia 1981, MacKinnon 1982 & 1983) however, hold that such patriarchal structures are emergent from the class producing inequalities inherent in capitalist means of production. The production of surplus value requires that the man who works in the capitalist's factory, pit, or office, requires a secondary, unpaid worker – the woman – to keep him fit for his labours, by providing the benefits of a home – food, keeping house, raising his children, and other comforts of family. Thus, merely in order to be fit to sell his labour, the proletarian man needs to 'keep' a support worker with the already meagre proceeds of his labour. Hence women are left with virtually no economic resources and are thus seen to exist within an economic trap that is an inevitable outcome of capitalist production. Socialist feminists attempt to steer a path between the radical and the Marxist views, identifying capitalist patriarchy as the source of women's oppression (Danner 1991). Such theorists (Eisenstein 1979, Hartmann 1979 & 1981, Messerschmidt 1986, Currie 1989) accept that a patriarchal society constrains women's roles and their view of themselves but that this patriarchy is the result not of male aggression but of the mode of capitalist production. Thus neither capitalist production nor patriarchy is privileged in the production of women's oppression, powerlessness, and economic marginalization. Socialist feminists believe that gender based oppression can only be overcome by creating a non-patriarchal, non-capitalist society, and that attempting merely to modify the status quo from within perpetuates the very system that generates inequalities.