London on Saturday, with police arresting over 120 people as they sought to stop far-right counter-protesters from ambushing the main rally.
Skirmishes broke out between police and the far-right groups gathered to protest against the demonstration taking place on Armistice Day, the anniversary of the end of World War One, when Britain commemorates its war dead.
Prime Minister Rishi Sunak condemned the violence seen at the Cenotaph war memorial and also attacked «Hamas sympathisers» who joined the bigger rally, «singing antisemitic chants and brandishing pro-Hamas signs and clothing on today's protest».
Tensions had been running high before Saturday's march — the biggest in a series to show support for the Palestinians and call for a ceasefire in the Gaza Strip — after interior minister Suella Braverman called them «hate marches» led by «mobs».
London's Metropolitan Police had refused ministerial requests to block the event, saying they did not have indications that there would be serious violence, straining relations with the government.
Police said in a statement late on Saturday that they had arrested 126 people so far, the majority of whom were right wing protesters who formed part of a group several hundred strong which police said included football hooligans.
«The extreme violence from the right wing protesters towards the police today was extraordinary and deeply concerning,» Assistant Commissioner Matt Twist said, adding that a knife and knuckleduster were found during searches.
The intense debate about protest and policing in the run-up to the march had raised community tensions, he said.
While the much larger pro-Palestinian rally did not see physical violence, the senior officer said small groups had