In the encounter, which she filmed, one officer told her: “Mentioning freedom of Gaza, Israel, genocide, all of that all come under proscribed groups, which are terror groups that have been dictated by the government.”

He went on to say that the phrase “Free Gaza” was “supportive of Palestine Action”, adding it was an offence “to express an opinion or belief that is supportive of a proscribed organisation, namely Palestine Action is an offence under section 12(1A) of the Terrorism Act”. The officer told her she had committed that offence.

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The ban on Palestine Action, the first against a direct action protest group, came into force on 5 July after a high court judge refused to grant the group’s co-founder Huda Ammori an injunction suspending it while legal action was pending.

One of the police officers told Murton they were “trying to be fair”, adding: “We could have jumped out, arrested you, dragged you off in a van.”