Gathering near Parliament Square, the group threw projectiles and insulted officers.

Source: https://www.dailymail.co.uk/news/article-12740393/Police-probe-pro-Palestine-protesters-pictured-carrying-anti-Semitic-placards-Armistice-Day-march-Suella-Braverman-says-sick-inflammatory-signs-display-mark-new-low.html?ns_mchannel=rss&ns_campaign=1490&it

Members of the climate group have said they are coordinating with the race’s organisers and do not plan to disrupt it, though spectators have been warned to avoid Parliament Square.

Source: https://www.theguardian.com/sport/2023/apr/23/london-marathon-2023-very-wet-rainy-weather-forecast

The rehearsal is for when Charles and the Queen Consort will make their way back from Westminster Abbey via Parliament Square, along Whitehall, around Trafalgar Square, through Admiralty Arch and down The Mall back to Buckingham Palace.

Source: https://www.express.co.uk/news/royal/1759393/Eerie-King-Charles-Coronation-rehearsal-midnight-Westminster-London

Thousands of people from across Britain descended on Parliament Square in London on Friday to join Extinction Rebellion’s (XR) four-day protest.

Source: https://socialistworker.co.uk/news/extinction-rebellion-kicks-off-four-days-of-protest/