Okin, like many liberal feminists of her time, highlighted the many ways in which gender-based discrimination defeats women's aspirations; they defended reforms intended to make social and political equality a reality for women. In 1979 she published Women in Western Political Thought, in which she details the history of the perceptions of women in western political philosophy. Her 1989 book "Justice, Gender and Family" is a critique of modern theories of justice. These theories include the liberalism of John Rawls, the libertarianism of Robert Nozick, and the communitarianism of Alasdair MacIntyre and Michael Walzer. For each theorist's major work she argues that a foundational assumption is incorrect because of a faulty perception of gender or family relations. More broadly, according to Okin, these theorists write from a male perspective that wrongly assumes that the institution of the family is just. She believes that the family perpetuates gender inequalities throughout all of society, particularly because children acquire their values and ideas in the family's sexist setting, then grow up to enact these ideas as adults. If a theory of justice is to be complete, Okin asserts that it must include women and it must address the gender inequalities she believes are prevalent in modern-day families. Okin discusses two opposing feminist approaches to ending legal sex-based discrimination against women in her 1991 essay "Sexual Difference, Feminism, and the Law". She says that examining the history and current ramifications of sex-based discrimination, and debating the best way to end inequality between the sexes, were prominent topics in that decade of feminist legal theory. Okin contrasts Wendy Kaminer's A Fearful Freedom, which champions an equal rights approach, backing gender-neutral laws and equal, not special treatment for women, with Deborah Rhode's Justice and Gender, which argues that an equal rights approach is insufficient to compensate for the past discrimination against women. In Okin's view, a failure to address whether the differences between men and women are founded in biology or culture is a shortcoming of both arguments. The essay concludes with a call to the feminists on both sides to stop fighting against one another, and work together in improving the disadvantaged situations of many women at the time. In 1993, with Jane Mansbridge, she summarized much of her own and others' work in the article on "Feminism," in Robert E. Goodin and Philip Petit, eds., A Companion to Contemporary Political Philosophy, 269-290,, and the next year, also with Mansbridge, published a two-volume collection of feminist writing, entitled Feminism.. In her 1999 essay, later expanded into an anthology, "Is Multiculturalism Bad for Women?" Okin argues that a concern for the preservation of cultural diversity should not overshadow the discriminatory nature of gender roles in many traditional minority cultures, that, at the very least, "culture" should not be used as an excuse for rolling back the women's rights movement.
