Why do fair but poorly conducted struggles lead to community-ism?

The injustices suffered by women are entirely real and deserve to be denounced and fought. The same goes for injustices suffered by people of color, homosexuals, autistic individuals, and others. Yet, the just struggle that arises from them often turns out to be counterproductive. Let's see why.

For now, since decision-making in our societies is structured around the game of alliances rather than the justice of the cause, all these social categories have no other option than to massify their support if they wish to weigh in politically and achieve change.
However, if a category fails to gain the support of a significant portion of the rest of society—because that society is not yet psychologically ready or motivated—its only remaining option is to massively recruit affected individuals. The simplest and most effective way to achieve this is to wage a structured fight based on 'us versus them.' Indeed, this appeals to our instincts and avoids the need to undertake the long and slow process of pedagogy aimed at our intelligence. But this comes with consequences.

On the one hand, this tends to provoke a bargaining-type response, with the level of concessions decreasing as the number of communities increases. On the other hand, social conflict intensifies with the number of communities, as each individual tends to define themselves more and more by their particularities that set them against the majority. Ultimately, this struggle system cannot escape the alternative of denial or community-ism.

The solution lies in shifting from a 'us versus them' struggle within each category to a common struggle for a more fair collective decision-making process. This would allow all injustices to be addressed simultaneously without pitting them against each other or systematically opposing individuals. In practice, this means restructuring political life around the notion of problem-solving, whereas for now it remains structured around the game of alliances. This shift is precisely the subject of the book From Capital to Reason.