Feminism is, in fact, a collection of movements aimed at defining, establishing and defending equal political, economic, and social rights and equal opportunities for women. Its concepts overlap with those of women's rights. Much of feminism deals specifically with the problems women face in overcoming social barriers, but some feminists argue that gender equality implies a necessary liberation of both men and women from traditional cultural roles, and look at the problems men face as well. Feminists—that is, persons practicing feminism—may be persons of either sex. Feminist philosophy emerged from these feminist movements and includes