TRA means Trans Rights Activist.
Traditionally, most people join the Green Party because they care about the environment. The climate emergency has added urgency to their worries and campaigning.
Over recent years, the Green Party has been the victim of entryism. There has been a surge of social justice warriors who put promoting the wishes of people who identify as TQ+ ahead of anything else.
Few people who join any political party actually become actively involved and even fewer stand for internal election or attend Party conferences.
Hence TRAs in the Green Party have a stranglehold over the party structures and have pushed crazy policies through such as "Transwomen are women, Transmen are men and non-binary identities are valid" which is not an equality claim; it is a belief claim, a catechism. It is as inappropriate for a political party policy as would be a statement that Jesus is the Christ, the Messiah and salvation may only be achieved through him or that Mohammed is God's true Prophet.
The Green Party says to voters, "Listen to the Science" when talking about Climate Change but wants us to ignore science (such as biology or physiology) when science inconveniently contraducts gender identity theory.
Gender identity authoritarians in the Green Party aim to silence those who disagree that men can be women; who say that women are discriminated against because of their sex and so should be able to organise on the basis of their sex; who say that Greens can't condemn artificial hormones in meat but promote them for people who don't like their bodies; who say that gender ideology serves the interests of big businesses, in particular big pharma; who raise concerns about what is happening to gender distressed children.
I have not met one gender critical member of the Green Party who wishes to suppress the free speech of those who believe in gender identity theory. We want them to be able to hold their beliefs and to express them, no matter how crazy those beliefs are. We want them to extend the same courtesy to us
But they will not be happy until everyone submits to their demands.
They have even started targeting people who believe that Trans Women Are Women but also want to see democracy and fair play.
They have, for example, targeted former MEP Molly Scott Cato and tried to have her recalled from her position.
GCs would love the Green Party to get back to its ecological roots but that won't happen while free speech and women's rights are under constant attack.