Violent clashes at a demonstration that saw police attacked and vehicles set alight have been condemned as "shameful" and "unacceptable".
Protesters clashed with officers as thousands turned out for the Kill the Bill march in Bristol on Sunday.
Twenty officers were injured, two seriously - one with a punctured lung. Seven people have been arrested.
Prime Minister Boris Johnson said people had a right to protest but the violent scenes were "unacceptable".
He added: "They should protest peacefully and legally."
Bristol Mayor Marvin Rees slammed the rioters as "selfish" for "living out their revolutionary fantasies".
Avon and Somerset Police Chief Constable Andy Marsh said the protest had been "hijacked by extremists", by "people who were determined to commit criminal damage".
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