In an unfortunate way many of the Beauvoir's observations about are more relevant now than they should be. In the introduction she has this to say about anti-feminism:
"In proving woman’s inferiority, the anti-feminists then began to draw not only upon religion, philosophy, and theology, as before, but also upon science – biology, experimental psychology, etc."
Modern day feminists and other people can easily draw comparisons between this statement and the increased scrutiny of women with regards to reproductive rights, lack of emphasis on childcare rights with regards to employment, and increased rhetoric enforcing the traditional roles of women. While it is hard to argue against the idea of a fundamental biological difference between the sexes, the fact that these same issues are being discussed today and have not been resolved over the past 60 years indicates that advocacy for various groups rights will continue to be necessary well into the future. With lobbying for rights of groups such as women and minorities it seems very likely that their views will be overlooked or ignored. Feminism will continue to be an important voice as it faces challenges of changing times and pressure from men and perhaps other women as well.
She goes on to compare the state of women to the situation faced by African Americans in the Jim Crow era south. I would argue that this is a different, much more overt kind of discrimination face by women. However in some ways discrimination against women runs even deeper and has taken longer to be addressed by American society. We applaud the civil war for ending slavery and granting African Americans the right to vote yet women were not allowed to have this right for another half century. The more overt forms of discrimination faced by African Americans manifested in the form of restaurants and drinking fountains being racially segregated which has not been done against women.