In a tweet on Saturday, Johnson said the protests saw “shameful attacks on police in Bristol”.
“Our officers should not have to face the fact that bricks, bottles and fireworks are thrown at them by a mob with intent to violence and causing property damage,” he said.
People took to the streets on Friday night – the third protest in a week – to voice their opposition to the bill, with more protests expected across the UK this weekend.
Crowds passed through Bristol city center – past the site of the now overturned statue of slave trader Edward Colston – and ended up outside Bridewell Police Station, which had been thrown to the ground by protesters over the week -end last.
Videos posted online appear to show protesters being pushed to the ground and beaten with riot shields.
A Daily Mirror reporter tweeted a video of officers apparently forcefully moving him and apparently hitting him with batons as he was heard shouting, “I’m under pressure!
Police in Avon and Somerset said they were aware of the video and were trying to contact the reporter involved.
Police said objects such as eggs and glasses were thrown at them, fireworks were launched at their mounted section and attempts were made to shoot their shields. A total of 10 people were arrested, with dogs and horses being used by officers until 1 a.m. local time.
Superintendent Mark Runacres said that “the majority of people acted peacefully, but a minority again showed hostility towards the officers.”
Tensions were particularly high, as the same police forces admitted on Friday that reports last weekend – claiming officers suffered injuries including broken bones and a punctured lung by protesters – were false.
“Fortunately, the injuries – although still serious – did not involve fractures or puncture of the lung. We thought the information had been verified, but it was not, and although we apologize, there was no intention to mislead, ”Avon and Somerset Police said in a statement. update.
The police services bill, as well as the violent interruption of a vigil for a murdered woman earlier this month and the arrest of a police officer on duty suspected of her murder, have put relations between the British police and much of the public under serious tension. .
Metropolitan Police Officer Wayne Couzens has been charged with the kidnapping and murder of Sarah Everard, in a case which has been intensely followed and which has led to a new national discussion on bullying, harassment and violence against women.
But police also became the subject of anger when they held a peaceful vigil in Everard in south London on March 13 and appeared to force women to the ground, an approach which led to scrutiny and scrutiny pending legislation that would strengthen their powers to dismantle protests and mass gatherings in the future.
Rob Picheta contributed reporting.