An 83-year-old retired priest was among more than 20 Palestine Action supporters arrested for defying a terror ban hours after it came into force.
Several dozen activists gathered in front of Parliament on Saturday holding signs reading: “I oppose genocide. I support Palestine Action.”
The protest came after the group was designated a terrorist group at midnight on Friday. Support or membership of the group is now a criminal offence punishable by up to 14 years in prison.
The move to ban the organisation was announced after it claimed responsibility for vandalising two Voyager aircraft at RAF Brize Norton in Oxfordshire on June 20, which police said caused around £7 million of damage.