Debbie Hayton, 51, a physics teacher in the Midlands, changed her gender from male to female in 2012.
She is now potentially facing expulsion from the LGBT+ committee of the Trades Union Congress (TUC) after wearing a t-shirt saying 'Trans women are men. Get over it.'
Ms Hayton wore the t-shirt at an event in July, organised by campaign group Fair Play for Women, as reported by The Sunday Times.
In August, 12 members of the committee sent a complaint about Ms Hayton to Frances O'Grady, the general secretary of the TUC.It's 'You couldn't make it up' territory again, isn't it?
How dare this person have an opinion about an identity group (even one they themselves belong to) that's not sanctioned by the High Priests and Priestesses of the Movement?
Nicola Williams, founder of Fair Play for Women, told the newspaper: 'Accusations of transphobia are thrown at women so often for so little that the word has lost all meaning.
'When even trans people can get called transphobes, I hope people now understand how ludicrous and far-fetched these attacks have always been. The trans movement has been hijacked by gender extremists.'If they do, what are they supposed to do about it? It's too late. The time to stop them would have been long ago.