JK Rowling has called on politicians to treat threats from the trans activist group Bash Back with greater seriousness following revelations that the organisation is plotting attacks on offices belonging to senior government figures.
The Mail on Sunday reported that the group has the Prime Minister and Health Secretary Wes Streeting among its intended targets.
Sharing the newspaper's story on X on Sunday, the celebrated author characterised Bash Back as part of a "totalitarian movement."
"Who knows, now that trans activists aren't only stalking, harassing, doxxing, threatening and physically assaulting women, our politicians might finally take the violence that's such a key feature of this totalitarian movement seriously," Ms Rowling wrote.
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JK Rowling called on politicians to treat threats from Bash Back with greater seriousness
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The group's official account responded dismissively to her post, replying: "Lol. Lmao even."
Bash Back presents itself as a "trans-led direct action project focused on total transgender liberation."
The organisation has already demonstrated its willingness to engage in criminal activity, having claimed responsibility for an attack on Streeting's Ilford North constituency office in August.
The vandalism followed the Health Secretary's public admission that he felt "deeply uncomfortable" with an NHS trial involving puberty-blocking drugs.
Ms Rowling called the trans activist group a 'totalitarian movement'.
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During the incident, windows at the premises were smashed and the phrase "child killer" was spray-painted across the building's exterior.
Police subsequently opened an investigation into the attack.
After the damage was inflicted, Bash Back shared images online accompanied by the message: "Don't want action? Don't kill kids."
The Mail on Sunday uncovered the group's latest scheme after Bash Back encouraged supporters to organise into small "cells" and prepare criminal damage operations against prominent figures.
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Who knows, now that trans activists aren't only stalking, harassing, doxxing, threatening and physically assaulting women, our politicians might finally take the violence that's such a key feature of this totalitarian movement seriously. https://t.co/pOFewjxOSj
— J.K. Rowling (@jk_rowling) December 28, 2025
In a direct warning to lawmakers, the group declared: "If you think we're done, you've got another thing coming. MP or PM, you've seen us once, we'll see you again."
Beyond ministers, the organisation has also identified the Free Speech Union and feminist group Sex Matters as potential targets.
Journalists alerted the Metropolitan Police and parliamentary security teams to their findings on Saturday evening.
Lord Young, founder of the Free Speech Union, subsequently commissioned an independent security assessment of the threat posed by the group.
A security briefing suggests British intelligence services are now monitoring the activist cells.
The group has carried out attacks beyond political targets, including an assault on the FiLiA Women's Liberation Conference at the Brighton Centre on 10 October.
Hooded activists covered the venue in pink paint and smashed windows during the incident, later posting footage of their actions online.
Bash Back described the gathering, which bills itself as Europe's largest grassroots feminist conference, as a place where "terfs gather every year to gloat about attacks on bodily autonomy and trans people's safety."
Sources say the transgender activist group is planning a series of attacks on senior politicians' offices
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Later that same month, the organisation targeted the Equality and Human Rights Commission headquarters in London, protesting the body's interim guidance on excluding trans people from single-sex spaces.
Following the initial attack on Streeting's office, Bash Back produced an action guide instructing sympathisers on conducting similar operations, evading police detection, and documenting their activities.
A Government spokesman condemned the group's activities, stating: "Threats, harassment, and vandalism are not only cowardly, they're criminal and we will pursue anyone who targets politicians and their staff in this way, with the full force of the law."
The spokesman added that the group's rhetoric was "dangerous" and served only to distract from efforts to improve the lives of trans people.
Maya Forstater, chief executive of Sex Matters, criticised the police response to trans activism, saying: "After years in which police forces rolled out the red carpet for trans lobby groups and harassed women's rights campaigners, it's no wonder that Bash Back seems to believe it can cause criminal damage with impunity."
A security memo noted that given the attack on a government minister's office, security services would almost certainly investigate the group.