There's a moment in a young woman's life when she discovers how much stronger physically adult men are than her. It may be playfighting with a high school friend or boyfriend, or it might be something significantly less friendly - doesn't matter, that eye-opening moment happens for everyone, and it instantly sets in the mind the idea that almost any man could do anything he wants to almost any woman.

In a world that preaches fundamental equality (rather than equal dignity, which is a different thing) among all humans, this realisation creates an untenable distress. We're all supposed to be equal, but half the population is much stronger. Traditional value systems enshrined this difference within the construct of chivalry - men were obliged to protect women, especially from other men - but those valuse are decidedly rejected. So what's left? resentment.

Resentment is the natural psychological reaction to observing so many people possessing something so fundamental in such greater amounts than you for no good reason. In a world of claimed equality, men being stronger is taken as an injustice.

This injustice then leads to adopting a belief system that can account for it. Men are depicted as oppressors, robbing women of their inherent equality. Therefore men must be taken down several pegs, in order to level those differences. And since those differences can't disappear, any amount of disadvantages and unfairness is justified against men, who are forever-oppressors in this frame.

This is the fundamental driver of female grievance politics: the observation of inherent sex differences and the adoption of an ideological framework to handle the cognitive dissonance this presents when constrated agaisnt claimed equality.