More than 50 people protesting against Britain's decision to ban the Palestine Action group were arrested outside parliament on Saturday, London's Metropolitan Police said.
Officers made arrests after crowds, waving placards expressing support for the group, gathered in Parliament Square, the force said on X.
The ban makes it a crime to be a member of the group, carrying a maximum sentence of 14 years in prison.
The co-founder of Palestine Action, Huda Ammori, last week won a bid to bring a legal challenge against the ban.
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