It seems as if social media platforms are forcing people to think in a certain way.

In a letter to a director of Twitter, feminist group Fair Play for Women, based in the United Kingdom, accused Twitter of playing into transgender ideology by banning anyone who dared to speak up about it. Attached the letter were several screenshots of members of Twitter who had been banned for criticizing or speaking about transgender politics.

Some of the screenshots include tweets that say, “Aimee Challenor is a Male. I support his wish to live his life however he choses, free of masculine stereotypes. But that does not make him a woman. And it does not entitle him to access female only spaces (any more than I can claim access to, say, a men’s hospital ward.” This account was considered by Twitter as in violation of the rules “against hateful conduct.”

The group accused Twitter Director Martha Lane Fox of being complicit in Twitter’s attempt to silence voices against transactivism. After detailing the threats and the abusive language that women who disagree with transactivism are subject to, the letter stated:

“And the worst thing? The platform on whose board you sit not only allows these threats and abuse to go on, but women who point out basic, incontrovertible biological facts are being banned from Twitter for speaking the truth. For saying that men are not women. For refusing to lie.”

Martha Lane Fox is also a member of the House of Lords. According to BBC News, she has not responded for comment.