“Ironically, in seeking to free people from sexism, these efforts have instead reinforced it by inventing a plethora of identity labels for people who do not conform to narrow conceptions of gender roles rather than challenging those norms. This is not progress. Using my own experiences as an example, I argue instead for a return to a separation of sex and gender, and a rejection of this new gender ideology.” —Kaylee Walker.
This paragraph is from an interesting and well-written essay, “Gender Policing on the Left,” published by the Queer Majority. The first sentence is correct, as is the second; however, a problem occurs with the third sentence: the author says that she will argue for a return not to a distinction between gender (i.e., sex) and gender (or sex) role but for a separation of sex and gender. But sex is gender, and the reasonable left is always going to undermine its politics if it accedes to language falsely making a distinction between what have been synonyms for six centuries.
I have written quite a lot on this. For examples, see Sex and Gender are Interchangeable Terms; Sex = Gender Redux: Eschewing the Queer Linguistic Bubble; Scientific Materialism and the Necessity of Noncircular Conceptual Definitions; The Science™ and its Devotees; Simulated Sexual Identities: Trans as Bad Copy; Neutralizing the Gender-Detection Brain Module; The Queer Project and the Practice of Deceptive Mimicry; Men Do Not Have Periods; Lesbians Don’t Like Penises, So Our Definitions Must Change; There’s No Obligation to Speak Like a Queer Theorist. Doing so Misrepresents Reality; The Casual Use of Propagandistic Language Surrounding Sex and Gender; Changing the Language of Gender does not Change the Definition of Rape; The Body as Primary Commodity: The Techno-Religious Cult of Transgenderism.
For ideological purposes and pecuniary interests, queer theory and the medical-industrial complex (see Disordering Bodies for Disordered Minds; Making Patients for the Medical-Industrial Complex; The Function of Gender Ideology in Rationalizing Physician Harm; Fear and Loathing in the Village of Chamounix: Monstrosity and the Deceits of Trans Joy; Thomas Szasz, Medical Freedom, and the Tyranny of Gender Ideology) take the anthropological/sociological concept of gender role, which is simultaneously (sub)culturally and historically variable and rooted in the objective reality of gender (the size of one’s gametes) and the natural division of labor along those lines, drops “role” from the concept, and repurposes the concept of gender to represent either behavioral expressions of masculinity and femininity, as if these could only arbitrarily correspond to reality, or the construct of “gender identity,” a nonfalsifiable entity either formed through trauma or akin to a soul capable of inhabiting the wrong body, an invention used to justify altering bodies physically and physiologically to realize the “authentic self.”
The reasonable left needs to return not to a separation of sex and gender, but a distinction between gender, on the one hand, and gender role on the other, while rejecting Stoller’s entity “gender identity.” There is no reason why a woman cannot express herself in culturally or historically masculine ways. Moreover, because of overlapping distributions, there are women with comparatively more masculine traits and attitudinal and behavioral proclivities. The same is true for men obviously. But there are no men with women’s brains, as Hirschfeld claimed in the early twentieth century. Like all other animals, humans are our bodies. Of course there are men who present with traits more commonly associated with women. This has always been true and is entirely normal. What is not normal is telling a tom boy that she is really a boy. That’s what queer ideology teaches girls—it teaches them to be estranged from their bodies. This estrangement is yet another feature of the alienation that marks a society in which the masses make history, but do not control the history they make, and are falsely conscious of the situation because they lack a cogent theory of the world.
freedom and reason 
In Simplest Terms Sex Is a Both a Biological Description, and Also An Action Word.. While Gender Is an Entirely Descriptive Term; The Failure to Recognize This Key Difference Guarantees Endless Debate