Metropolitan Police
Just Stop Oil protesters also interrupted MPs on the home affairs committee.
What does this say about how we police protests?
Campaign group Republic has demanded a “full inquiry” after the group was prevented from dissenting during the King's coronation.
The three people arrested were helping with a council initiative and handing out rape alarms and flip-flops.
"The right to protest peacefully in the UK no longer exists," Graham Smith said.
"Telling people who don’t agree with you to leave the country is about as 'cancel culture' as it gets."
Scotland Yard said they arrested people on suspicion of "breaching the peace".
"Feudal mentality lives on."
Baroness Casey's review calls for immediate reform – or for the force to be broken up.
The former prime minister will be grilled by the privileges committee on Wednesday over whether he misled parliament.
About Metropolitan Police
The Metropolitan Police Service was founded by Sir Robert Peel in 1829. Today its head is commissioner Cressida Dick. The Met police has recently been subject to controversy over allegations some journalists gave money to police for information during the phone hacking scandal. A force is also known as "the Met", "Met Pol", "MP" and "the MPS" and has more than 31,000 officers together with about 13,000 police staff and 3,700 Police Community Support Officers (PCSOs). The MPS is also being supported by 2,500 volunteer police cadets and more than 5,000 volunteer police officers from the Metropolitan Special Constabulary (MSC) and its Employer Supported Policing (ESP) programme. The Metropolitan Police Services covers an area of 620 square miles and a population of 7.2 million.