A movement to promote women's interests at the expense of men.
Despite claims by some moderate (and misled) feminists
to the contrary, feminism is not a movement for the betterment of men and women. If it was, it would be called humanism.
Feminists are not concerned, for example, about the fact that four times as many men commit suicide as women or that fewer and fewer boys attend college or graduate from high school.
Feminists demand that we treat men and women as exactly equal unless it suits women to differentiate between the sexes.
For example, a typical feminist will see no irony in arguing on one hand that women need more protection from domestic violence, rape and sexual harassment but on the other hand that women are just as good as men at construction and fighting crime, fires and wars.