Hundreds of thousands of people are expected to take to the streets, block roads and occupy bridges in protest against Boris Johnson’s plan to shut down Parliament.
Some 32 #StopTheCoup protests are scheduled throughout England, Scotland and Wales on Saturday, organised by anti-Brexit group Another Europe is Possible.
And last night Jeremy Corbyn urged MPs to join members of left-wing group Momentum, who plan to “occupy bridges and blockade roads” alongside the protests.
Michael Chessum, national organiser for Another Europe Is Possible, said “disruption is the only form of leverage protesters can rely on”.
He said that, while the group is not encouraging demonstrators to block roads, that kind of disruption is “certainly possible”.
“We would go further than anticipate (civil disobedience),” Mr Chessum said. “We would defend it.”
Labour leader Jeremy Corbyn has urged MPs to join the demonstrations and oppose the shutdown of Parliament.
In a letter to the Parliamentary Labour Party, Mr Corbyn said: “I am addressing a major rally in Salford on Monday. But there are also public protests across the country this Saturday, there will be a rally in Parliament Square on Tuesday evening, and I encourage Labour MPs to be present and to share our message.”
Labour MP Clive Lewis has also called for people to support the #StopTheCoup protests.
In a Twitter post, in which he shared a link to the protest’s online crowdfunding page, Mr Lewis said: “Pls click & support and help us defend OUR democracy.”
Further mass demonstrations, organised by the People’s Assembly Against Austerity, are planned to take place on Tuesday to coincide with MPs returning to Westminster.
The calls for protests come as a petition against Prime Minister Boris Johnson’s plan to suspend Parliament racked up more than 1.5 million signatures as of Friday morning.
It also follows multiple protests in London, Edinburgh and other cities on Wednesday, which took place within hours of Mr Johnson announcing his plans.
Mr Chessum said he expects to see “hundreds of thousands” of people taking part in the demonstrations across the UK on Saturday, with the protest in London being the largest.
He said: “Ultimately we are not going to persuade Boris Johnson to change his mind through some intellectual exercise.
“This process needs to force the Government to change its course.”
The main London protest is due to take place outside Downing Street from midday on Saturday.
Other demonstrations will be held in cities including Birmingham, Manchester, Liverpool, Glasgow, Swansea, Leeds, Bristol and Aberdeen.
The Jo Cox Foundation, which was set up in the wake of the Labour MP’s murder in 2016, warned that anger over Brexit “should not spill over into something more dangerous”.
In a statement, the foundation said: “People have an absolute right to protest, whether in Parliament, on demonstrations or in the media.
“We believe strongly in freedom of speech. But we would urge everybody to avoid saying or doing anything that could incite or lead to violence.”
Islington North MP Mr Corbyn said in a letter to the Parliamentary Labour Party that “no-one voted for Boris Johnson’s shutdown of democracy”.
He said: “That is why the public outrage at his actions has been so deafening, and why I am encouraging MPs to join public protests opposing this shutdown and the Prime Minister’s threat of a no-deal Brexit.”
According to the Mirror, Laura Parker, Momentum’s national co-ordinator, said she would join an occupation of Parliament as the group stepped up its campaign.
It quoted her as saying: “Our message to Johnson is this: if you steal our democracy, we’ll shut down the streets.
“There are thousands of us who will join an occupation of Parliament and block the roads before we let Johnson close the doors on democracy.”
Momentum has been contacted for comment.