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- Police patrol as protesters from climate group Extinction Rebellion stand atop of a fire engine after spraying fake blood on and outside the Treasury building in central London on October 3, 2019. (Photo by Alberto Pezzali/NurPhoto via Getty Images)
- Police patrol as protesters from climate group Extinction Rebellion stand atop of a fire engine after spraying fake blood on and outside the Treasury building in central London on October 3, 2019. (Photo by Alberto Pezzali/NurPhoto via Getty Images)
- LONDON, ENGLAND - OCTOBER 03: A street worker cleans fake blood from outside the Treasury building on October 3, 2019 in London, England. Climate change activists from the group Extinction Rebellion used a fire engine in an attempt to spray the Treasury building. (Photo by Peter Summers/Getty Images)
- LONDON, ENGLAND - OCTOBER 03: A climate change activist is arrested outside the Treasury building on October 3, 2019 in London, England. Climate change activists from the group Extinction Rebellion used a fire engine in an attempt to spray the Treasury building. (Photo by Peter Summers/Getty Images)
- LONDON, ENGLAND - OCTOBER 03: Climate change activists hold a banner reading 'This is an emergency' outside the Treasury building on October 3, 2019 in London, England. Climate change activists from the group Extinction Rebellion used a fire engine in an attempt to spray the Treasury building. (Photo by Peter Summers/Getty Images)
- LONDON, ENGLAND - OCTOBER 03: Police officers help a climate change activist down from a fire truck outside the Treasury building on October 3, 2019 in London, England. Climate change activists from the group Extinction Rebellion used a fire engine in an attempt to spray the Treasury building. (Photo by Peter Summers/Getty Images)
- LONDON, ENGLAND - OCTOBER 03:A climate change activist is surrounded by Police officers outside the Treasury building on October 3, 2019 in London, England. Climate change activists from the group Extinction Rebellion used a fire engine in an attempt to spray the Treasury building. (Photo by Peter Summers/Getty Images)
- LONDON, ENGLAND - OCTOBER 03: A climate change activist is arrested outside the Treasury building on October 3, 2019 in London, England. Climate change activists from the group Extinction Rebellion used a fire engine in an attempt to spray the Treasury building. (Photo by Peter Summers/Getty Images)
- LONDON, ENGLAND - OCTOBER 03: A climate change activist is arrested outside the Treasury building on October 3, 2019 in London, England. Climate change activists from the group Extinction Rebellion used a fire engine in an attempt to spray the Treasury building. (Photo by Peter Summers/Getty Images)
- LONDON, ENGLAND - OCTOBER 03: Police officers help a climate change activist down from a fire truck outside the Treasury building on October 3, 2019 in London, England. Climate change activists from the group Extinction Rebellion used a fire engine in an attempt to spray the Treasury building. (Photo by Peter Summers/Getty Images)
- Workers clean outside the Treasury building in central London on October 3, 2019 after protesters from climate group Extinction Rebellion sprayed fake blood on and outside the building in a demonstration to draw attention to global heating and "climate breakdown". (Photo by Tolga AKMEN / AFP) (Photo by TOLGA AKMEN/AFP via Getty Images)
- Police stand outside to secure the Treasury building in central London on October 3, 2019 after protesters from climate group Extinction Rebellion sprayed fake blood on and outside the building in a demonstration to draw attention to global heating and "climate breakdown". (Photo by Tolga AKMEN / AFP) (Photo by TOLGA AKMEN/AFP via Getty Images)
- Police officers outside the Treasury building in Westminster, where Extinction Rebellion campaigners have sprayed 1,800 litres of fake blood from a fire engine. (Photo by Aaron Chown/PA Images via Getty Images)
- Police officers outside the Treasury building in Westminster, where Extinction Rebellion campaigners have sprayed 1,800 litres of fake blood from a fire engine. (Photo by Aaron Chown/PA Images via Getty Images)