This article is more than 11 months old

This article is more than 11 months old

Extinction Rebellion climate protesters have promised to continue their mass civil disobedience campaign in London despite a city-wide ban on their demonstrations announced late on Monday night.

Hundreds of police officers moved in almost without warning to clear protesters who remained at the movement’s camp in Trafalgar Square on Monday night.

The crackdown, which was condemned by campaigners and politicians, came shortly after the Met issued a revised section 14 order on Monday stating that “any assembly linked to the Extinction Rebellion ‘autumn uprising’ … must now cease their protests within London” by 9pm.

However, by 8am on Tuesday it was clear the climate campaigners had no intention of backing down as one of the organisation’s founders, Gail Bradbrook, led a protest at the Department for Transport in London.

Standing on top of the entrance of the building before she was arrested, Bradbrook called on ministers to explain how their continued expansion of roads and airports fitted with a net-zero emissions target. “I do this for the beautiful pear tree at Cubbington Woods, 250 years old – they have no rights. I do this in fierce love of the 108 ancient woodlands threatened by HS2, this climate crime of a project. I do this in the spirit of what Emmeline Pankhurst called the noble art of window smashing.”

Facebook Twitter Pinterest Gail Bradbrook kneels on top of the doorway into the Department for Transport in central London on Tuesday morning. Photograph: Henry Nicholls/Reuters

The group has brought widespread disruption to parts of central London over the past week to highlight the growing climate and ecological emergency. It has drawn support from scientists, doctors, grandparents and religious leaders – many of whom are among more than 1,400 people who have been arrested so far.

The group has three demands: for the UK government to tell the truth about the climate and ecological emergency; for it to adopt a target of zero carbon by 2025; and for the government to set up a citizens’ assembly to decide future policy on the environment.

Q&A What are Extinction Rebellion's key demands? Show Hide The UK group of Extinction Rebellion has three core demands: 1) Tell the truth

The government must tell the truth about the scale of the ecological crisis by declaring a climate emergency, “working with other groups and institutions to communicate the urgent need for change”. 2) Net zero emissions by 2025

The UK must drastically cut its greenhouse gas emissions, hitting net zero by 2025. 3) Citizens’ assembly

The government must create a citizens’ assembly to hear evidence and devise policy to tackle the climate crisis. Citizens’ assemblies bring together ordinary people to investigate, discuss and make recommendations on how to respond, in this case, to the ecological emergency. In the US activists have added a further demand: “A just transition that prioritises the most vulnerable and indigenous sovereignty [and] establishes reparations and remediation led by and for black people, indigenous people, people of colour and poor communities for years of environmental injustice.” Matthew Taylor

The police crackdown was condemned by politicians on Tuesday.

The Green MEP Molly Scott Cato tweeted: “A terrible sight in a democracy.”

Molly Scott Cato MEP (@MollyMEP) A terrible sight in a democracy



Police are occupying Trafalgar Square to prevent peaceful protest



This is the work of Priti Pitel's Home Office



And where is @SadiqKhan? pic.twitter.com/xkMlJjvMfZ

Ellie Chowns, another Green MEP from the West Midlands, was one of those arrested when the police moved into Trafalgar Square.

Ellie Chowns MEP (@EllieChownsMEP) Last night I was arrested in Trafalgar Square while defending the right to peaceful public protest. That right is central to a functioning democracy. Yesterday, public protest was banned throughout our capital city. This is a completely unjustified and disproportionate measure.

However, the Met deputy assistant commissioner Laurence Taylor said: “These conditions have been imposed due to the continued breaches of the section 14 condition previously implemented and ongoing serious disruption to the community.

“We have made significant progress in managing Extinction Rebellion’s activity at sites across central London over this past week. Officers have begun the process of clearing Trafalgar Square and getting things back to normal.”

Facebook Twitter Pinterest Protesters’ tents in Trafalgar Square on Monday. Photograph: Jack Dredd/Rex/Shutterstock

But despite the crackdown XR activists said they were determined to carry on with their protests, with plans to close one of the bridges across the Thames later on Tuesday with a No Food, No Future protest and an XR grandparents’ group planning a protest outside Buckingham Palace.

Ronan McNern from XR said the authorities could not ignore the crisis. “Those making the decisions around this need to realise that we are a peaceful organisation and that there is not a security solution to this … the climate and ecological crisis is here and it cannot be addressed by tougher policing.”