Dozens of people were arrested in London amid the coronation celebrations Saturday – a day when police said they would have a low tolerance and deal "robustly" with disrupters.
Some of the arrests included offenses like disrupting public order and conspiracy to cause a public nuisance, but some anti-monarchy protesters with the group Republic also found themselves in handcuffs following a demonstration at Trafalgar Square.
Republic’s head Graham Smith was among those arrested, according to Reuters.
The arrests of peaceful protesters caused some alarm among human rights groups.
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"This is something you would expect to see in Moscow, not London," Human Rights Watch UK director Yasmine Ahmed told BBC News.
Commander Karen Findlay defended the arrests.
"Protest is lawful and it can be disruptive," she said in a statement. "We have policed numerous protests without intervention in the build-up to the coronation, and during it."
She added it was their "duty" to have a "proportionate" response.
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"We also have a duty to intervene when protest becomes criminal and may cause serious disruption This depends on the context. The coronation is a once in a generation event and that is a key consideration in our assessment. A protest involving large numbers has gone ahead today with police knowledge and no intervention."
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In total, 52 people were arrested Saturday and all remain in custody, police said.
King Charles III and Queen Camilla were officially crowned in a ceremony at London's Westminster Abbey Saturday morning that drew thousands to the area to see the king and queen riding to and from Buckingham Palace.
The Associated Press contributed to this report.
