"I know some people think I'm on the wrong side of history because I believe my gender is a feeling and my biology is a fact. This is known as a gender-critical belief and it is protected under the Equality Act. Nonetheless, I've lost at least a dozen friends over this – mainly from the US, but also in the UK, friends who have told me my beliefs are transphobic, even when I tell them that I support everyone's right to live the way they want. It's always heartbreaking, but also bewildering. Most of us are in the same political tribe, so when did differences of opinion become so unacceptable to so many liberals and lefties? Many of my friends supported Jeremy Corbyn, and even though I found his frequent proximity to antisemites truly upsetting, I didn't drop them from my life. I'm old enough to know there's a difference between denouncing bigotry and demanding everyone march in lockstep with you. If you're more interested in performing your own purity than understanding people's plurality, you're not looking at progress, you're looking into a mirror."