The Court of Session in Edinburgh refused Friday to take legal action to prevent Johnson from suspending Parliament for several weeks during part of the period ahead of the Brexit deadline on October 31.
The self-described "hard-left, hard-remain" campaigner said: "I think it's an essential part of any successful protest movement".
The prospect of an explosive Commons battle next week came as Mr Johnson called for both the United Kingdom and European Union to "step up the tempo" in talks.
The People's Assembly will mounting demonstrations across the country up until Tuesday - which would see a main protest staged outside Parliament as MPs return to the Commons after summer recess.
Meanwhile, the Labour leader Jeremy Corbyn has encouraged people to come out on the streets tomorrow.
Protests are being held outside Downing Street and in cities including Birmingham, Manchester, Liverpool, Glasgow, Swansea, Leeds, Bristol and Aberdeen.
Michael Chessum, national organiser for Another Europe is Possible, said: "The crowds are angry, energetic and hopeful, and are taking matters into their own hands. That means civil disobedience and being willing to disrupt things".
"I have been unpersuaded by the reasons given for that decision, which I believe risks undermining the fundamental role of Parliament at a critical time in our history, and reinforces the view that the government may not have the confidence of the House for its Brexit policy", he said.
'Angered that the Authorities and a Prime Minister elected by 93,000 members of the Tory social gathering is attempting to hijack the wants, goals and aspirations of 65 million folks.
Another senior Conservative MP, who is likely to back moves to prevent a no-deal Brexit next week, said they would be "disappointed" if it appeared that the government was "threatening" colleagues.
It also follows multiple protests in London, Edinburgh and other cities on Wednesday, which took place within hours of Mr Johnson announcing his plans.
"And parliament has not come up with any clear solution itself and therefore the government is pushing at present to get through a deal that it says the British want and voted for in the referendum and general election".
The pound slid on the surprise news, which opponents branded a "coup" and a "declaration of war" but Mr Johnson claimed was necessary to allow him to pursue a "bold and ambitious" new domestic legislative agenda.
She told The Times: "Real power doesn't sit with the Queen or in parliament. We've been talking about nearly nothing but Brexit", he told reporters at a summit in Helsinki.
"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".
"Constituents have been contacting me to voice their disgust at what's going on". But the decision outraged critics and is serving as a unifying force for the disparate opposition, who have confirmed they will press on with measures to block a departure from the European Union without a deal despite Johnson's actions.
"And it's ironic that they are complaining about Parliament being shut down while they are stopping anyone from getting there at all".
Jeremy Corbyn drew rapturous applause for a weird impression of Boris Johnson, as he mocked the Prime Minister's mannerisms.
Without one, Britain will end its four decades of membership without a deal governing key issues such as future trade relations and citizens' rights.
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