Can anyone explain the meaning of the following from Judith Butler's Gender Trouble:
Juridical notions of power appear to regulate political life in purely negative terms—that is, through the limitation, prohibition, regulation, control, and even “protection” of individuals related to that political structure through the contingent and retractable operation of choice. But the subjects regulated by such structures are, by virtue of being subjected to them, formed, defined, and reproduced in accordance with the requirements of those structures. If this analysis is right, then the juridical formation of language and politics that represents women as “the subject” of feminism is itself a discursive formation and effect of a given version of representational politics. And the feminist subject turns out to be discursively constituted by the very political system that is supposed to facilitate its emancipation. This becomes politically problematic if that system can be shown to produce gendered subjects along a differential axis of domination or to produce subjects who are presumed to be masculine. (bold added)
I understand the first part, but what on Earth does "This becomes politically problematic if that system can be shown to produce gendered subjects along a differential axis of domination or to produce subjects who are presumed to be masculine" mean? I assume by axis she is referring to intersectionality in some way, but what is a "differential axis" in this philosophical context?