You're talking about slut marches and the like by feminists. The idea is to oppose the Madonna-Whore dichotomy and to make sluttiness more acceptable. Feminists also want complete freedom to advertise their goods and they oppose every type of shaming of women based on their sex or sexual behavior in general.

The Madonna-Whore dichotomy exists because men value certainty of paternity. There is value in female chastity and sexual devotion to one's provider-husband has considerable value on the marriage market. Feminists oppose the entire setup.

Feminists have, in my opinion, somewhat unrealistic goals. Total gender neutrality is an impractical idea. Why? Because it's women who get pregnant, lactate and mothers are generally what babies and toddlers primarily need as caregivers. Fathers are very, very important for slightly older kids to bond with. And for kids of all ages, fathers are important as breadwinners. For infants totally dependent on their mothers, fathers as breadwinners are vital. The male role as the breadwinner and as the secondary caretaker and as a mentor for his children, a life-long commitment, means that female sexual fidelity remains as valuable as ever. Female sluttiness as well as open and unhindered hypergamy interfere with women's role as good mothers. That said, I'm not in favor of any kind of shutting out of women from society into their homes as in ultra-conservative societies. Some standards of modesty, sexual discipline and understanding of the female role as the sexual gatekeeper are necessary for society to function.