A man was arrested on suspicion of making threats to kill as at least 100,000 pro-Palestinian protesters took to the streets of central London demanding a ceasefire in the Israel-Hamas war.
Flags and banners were waved, flares were lit and fireworks were let off as the mostly peaceful group of demonstrators snaked through the closed-off roads in Westminster on Saturday afternoon.
Around 1,000 officers policed the event, which saw nine confirmed arrests.
Seven of those were alleged public order offences, a number of which are being treated as hate crimes, while two are for suspected assaults on officers.
One man was detained on Whitehall after a police officer was assaulted during clashes with protesters close to Downing Street, the Metropolitan Police said.
Punches and kicks were thrown and officers ordered the protesters to move away as a man was taken to the floor and carried away to chants of “let him go”.
The force said the officer suffered a laceration to the head and was receiving hospital treatment following the incident.
Another man was arrested in Waterloo Road on suspicion of a racially aggravated public order offence and making threats to kill.
Police also issued an appeal to identify two women in connection with an alleged hate crime incident in Trafalgar Square.
Some protesters chanted “from the river to the sea, Palestine will be free”, despite controversy around the slogan’s meaning.
Home Secretary Suella Braverman has previously branded the slogan antisemitic and claimed that it is “widely understood” to call for the destruction of Israel.
However, pro-Palestinian protesters have contested this definition.
Meanwhile, the nearby Earl Haig Memorial statue was a target of graffiti, with the words “God save Gaza”.
It came after a woman was knocked over by a police horse after the animal was startled by fireworks, but appeared to be fine when she was brought back to her feet.
Protesters had gathered at noon before marching through the streets of Westminster, bringing traffic to a halt.
Former Labour leader Jeremy Corbyn was among the politicians who addressed them on a stage in Parliament Square.
He said: “The world’s nations voted at the United Nations last night in the General Assembly by an overwhelming majority to demand a ceasefire.
“It’s not much to ask, a ceasefire, when children are being killed by weapons coming through the rooms of their homes.
“It is in eternal stain that the British Government abstained on that vote.”
A Section 60 and Section 60AA authority was later put in place until midnight, giving police stop and search powers in the London boroughs of the City of Westminster and Kensington and Chelsea.
A Section 60 AA requires a person to remove items that might be used to conceal their identity, such as masks.
Protests also took place in Manchester, Glasgow, Belfast and other cities.