What is sex and when is sex-separation permissible?

A question from a subscriber

May 20, 2025

I recently received a message from a friend and Substack subscriber who has an upcoming meeting with a Democratic representative in her state’s legislature. She asked me under what circumstances it’s permissible for entities to have single-sex facilities.

It occurred to me that the Democratic Party and the Establishment Left in general have so confused everyone as to what sex is that a Substack post about it might be worthwhile.

I wrote about all of this in my 2023 book The Reckoning: How the Democrats and the Left Betrayed Women and Girls. This post focuses on the US, but will draw on resources from other countries. I’ll do my best to minimize the legalese.

Some of the most virulent gender zealots will say things like, “No one is saying that sex isn’t real, but …”

Oh, but they are. Read on to learn more.

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