
MPs have voted to proscribe Palestine Action as a terrorist organisation after the group targeted an RAF base and an Israeli defence company's UK headquarters.
The legislation passed with 385 MPs voting to proscribe the group, while 26 voted against the move.
The amendment to the Terrorism Act 2000 to include Palestine Action and two white supremacist groups, Maniacs Murder Cult and Russia Imperial Movement, will go to the House of Lords on Thursday and become law at midnight on 9 July if it passes through successfully.
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It means it will become a criminal offence - punishable by up to 14 years in prison - to be a member of the three groups or to support them, if any legal challenges by the groups prove to be unsuccessful.
Security minister Dan Jarvis told MPs protesters expressing support for Palestine "have always been able to, and can continue to do so".
He said: "Palestine Action is not a legitimate protest group.
"People engaged in lawful protest don't need weapons. People engaged in lawful protest do not throw smoke bombs and fire pyrotechnics around innocent members of the public.
"And people engaged in lawful protest do not cause millions of pounds of damage to national security infrastructure, including submarines and defence equipment for NATO."
However, several Labour MPs made impassioned speeches about why they think Palestine Action should not be a terrorist organisation, and raised concerns it was grouped in with the other two.
They argued that proscribing the group "threatens basic freedoms and sets a dangerous precedent for political dissent".
Independent MP Zarah Sultana, a former Labour MP, said: "To equate a spray can of paint with a suicide bomb isn't just absurd, it is grotesque.
"It is a deliberate distortion of the law to chill dissent, criminalise solidarity and suppress the truth."
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What does being proscribed mean?
Palestine Action is seeking a legal challenge against the government's bid to proscribe it, with a hearing expected on Friday to decide whether its proscription can be temporarily blocked, pending further proceedings to decide whether a legal challenge can be brought.
Members of Palestine Action are accused of entering RAF Brize Norton in Oxfordshire on 20 June and vandalising two aircraft with red paint.
Five people have been arrested over the incident on suspicion of a terror offence.
A security review was launched across the "whole defence estate" following the breach.
(c) Sky News 2025: MPs vote to proscribe Palestine Action as terrorist organisation