Three law enforcement officials have been injured and 40 individuals have been arrested throughout an illustration in Westminster.
One officer suffered a critical facial harm after she was hit with a bottle thrown from inside the crowd, the Metropolitan Police stated.
The Met stated the suspect has not but been recognized however police are investigating.
Different arrests associated to assaults on emergency staff, obstruction of the freeway and public order act breaches, the drive added.
The protest – organised by the Palestine Solidarity Marketing campaign and different teams –started in Whitehall at 18:00 BST and was as a consequence of finish two hours later.
The “overwhelming majority” of protesters – between 8,000 and 10,000 individuals – left with out incident, police stated.
A bunch of about 500 remained and continued to protest.
The Met stated some resisted arrest, which required officers “to make use of drive” to take away them from the gang.
A breakaway march then made its option to Bridge Avenue, outdoors Westminster Tube station, the place police put cordons in place.
Officers went into the gang shortly earlier than 22:00 to arrest these suspected of main the breakaway protest.
The Palestinian Solidarity Marketing campaign stated it organised the emergency march to reiterate requires a ceasefire in Gaza, following an Israeli air strike and ensuing fireplace that killed at the very least 45 Palestinians on Sunday.