Banksy has confirmed he is the artist of new work at the Royal Courts of Justice in London.
The famous street artist shared a picture of the artwork on his Instagram account on Monday morning.
It shows a judge using his gavel to strike a protester who is lying on the ground holding a placard.
The artwork is on an external wall of the Queen’s Building, part of the Royal Courts of Justice complex, and appears to reference the recent use of the law to crack down on protesters.
On Saturday, the Met police arrested almost 900 demonstrators at a central London rally protesting against the banning of Palestine Action as a terror group.
Organisers said the rally was “the picture of peaceful protest”, with attendees sitting and holding signs, although the force condemned the “intolerable” abuse it claims its officers suffered.
Last year, organisers of Just Stop Oil climate change protests were jailed for up to five years for their role in a series of demonstrations including climbing on gantries over the M25 and throwing soup over Vincent van Gogh's Sunflowers painting .
Their sentences were reduced on appeal in March.
The artwork has already been concealed by large sheets of black plastic and two metal barriers.
The piece is the latest creation of the artist, whose identity is the source of constant speculation.
The artwork is being guarded by security officials outside the building and sits under a CCTV camera.
Last summer, Banksy made headlines with his animal-themed collection in the capital, which concluded with a gorilla appearing to lift up a shutter on the entrance to London Zoo.
Other notable works included piranhas swimming on a police sentry box in the City of London, turning the box into what looked like a giant fish tank, and a howling wolf on a satellite dish, which was taken off the roof of a shop in Peckham, south London, less than an hour after it was unveiled.
The animals collection was made up of nine works including a rhino seemingly mounting a silver Nissan Micra, two elephant silhouettes with their trunks stretched out towards each other and three monkeys that looked as though they were swinging on a bridge.
