Very good discussion of the UCU's 'Motion 38' that would declare being gender critical to be inherently 'transphobic'. It points out that this be (a) unlawful and (b) against the ethos of trade unions.
Historically, trade unions have recognised that allowing workers to be blacklisted or censored for our political activity prevents us from organising, and enables employers to victimise union members.
Freedom to campaign on the political issues of the day is an essential pre-requisite for democracy in general, and for workers’ rights specifically, and to give up that freedom and hand employers the right to vet our political work will be to our own cost.