Once a person acknowledges that they possess some form of privilege, they are more likely to accept the reality that they are not in any way objectiv… - Julia Serano

I mentioned at the outset that I dislike the term "identity politics." This is because the phrase seems to suggest that our identities (rather than the marginalization we face) is the most salient feature of our activism. Indeed, this is probably why those who oppose IP-umbrella activism seem so fond of calling it “identity politics” in the first place. [...] In contrast, within IP circles, the term is often reserved for a specific brand of single-issue activism that completely precludes perspectives from those who do not share the identity in question.

People tend to harbor essentialist beliefs about sex — that is, they presume that each sex category has an underlying "essence" that makes them what they are. This is what leads people to assume that trans women remain "biologically male" despite the fact that many of our sex characteristics are now female. However, there is no “essence” underlying sex; it is simply a collection of sexually dimorphic traits. Some people will presume that sex chromosomes must be this "essence," even though we cannot readily see them, plus there are non-XX or XY variants. Others presume that genitals are this "essence" (probably because they are used to determine our birth-assigned and legal sex), although they can vary too, and may eventually change (e.g., if one undergoes sex reassignment surgery). In day-to-day life, we primarily rely on secondary sex characteristics to determine (or more precisely, presume) what sex a person is — and of course, these traits may change via a simple hormone prescription. Like I said, there is no mystical “essence” underlying sex.

Like women more generally, many trans women are feminists. Feminism and transgender activism are not in any way incompatible or mutually exclusive. As feminists who acknowledge intersectionality, we believe that we should be fighting to end all forms of sexism and marginalization — this includes both traditional sexism and transphobia. Forcing trans women into a separate group that is distinct from cis women does not in any way help achieve feminism’s central goal of ending sexism.