Tens of thousands of pro-Palestinian demonstrators marched through central London on Saturday to demand a permanent ceasefire in Gaza, the latest in a series of similar weekend protests in the city since the seven-week conflict began.

Saturday’s march took place amid the first four-day cease-fire between Israel and the Palestinian Islamist group Hamas, but protestors felt it was insufficient.

“We need full support for a permanent ceasefire in Gaza,” protester Kate Hudson, 64, told Reuters at the rally as demonstrators carrying signs such as “Ceasefire Now!” and “Stop the War on Gaza” walked peacefully along the march route towards the Houses of Parliament.

“It’s very welcome that there is a pause … But this problem needs to be resolved and resolved so that the Palestinians finally have the political settlement that countless U.N. resolutions have enshrined,” said Hudson, an anti-war activist.

Police, who were handing out leaflets to warn demonstrators against breaking the law, arrested a man on suspicion of inciting racial hatred near the start of the protest. They said on social media that he had been seen carrying a placard with Nazi symbols on it.

More than 120 protesters were arrested during a march earlier this month, when skirmishes broke out between police and far-right groups who had gathered to protest against the pro-Palestinian demonstration.

A protest against antisemitism is also planned in London on Sunday and London’s Metropolitan Police said more than 1,500 officers would be on duty over the weekend to handle the two protests.

Former interior minister Suella Braverman was fired by Prime Minister Rishi Sunak after an unauthorised article in which she had accused police of “double standards” at protests showing support for Israel and pro-Palestinian demonstrations.