Police arrest a climate change protester on Waterloo Bridge during Earth Day climate change protests in London on Wednesday.
Organisers expect thousands of people to converge on Marble Arch, Oxford Circus, Waterloo Bridge, Piccadilly Circus and Parliament Square in non-violent action which could last for weeks.
The cofounder of Extinction Rebellion, Roger Hallam, told Financial Times that his motive in creating the organization was "overwhelming evidence of the demise of the human race ..."
A group called Extinction Rebellion targeted the Anglo-Dutch oil major as part of a days-long event in which it disrupted public areas throughout London with banners and props.
Roger Hallam, one of the movement's leaders, said on Monday nothing like this had been seen on the streets of London for decades. "We have to go on to a war footing".
Police carry an activist from Waterloo Bridge
The protestors say that every second that is wasted by politicians is more blood on the government's hands. Extinction Rebellion have organised a nationwide week of action, they are calling for a full-scale Rebellion to demand decisive action from governments on climate change and ecological collapse. Rebellion!" and "We are peaceful! "We must act now". It could be there are more arrests at night and people are ready and willing.
The first signs of trouble came from a co-ordinated - but unannounced - display of civil disobedience at Shell's offices in Waterloo, where three men were arrested on suspicion of criminal damage.
Blythe Pepino, 34, from Hereford, said: "The objective is to maintain the disruption on the bridge to bring the Government to the table and talk about the climate crisis".
Police confirmed since the protests across the capital started on Monday morning, they have made a total of 122 arrests.
But later on Monday the Met issued an order under section 14 of the Public Order Act, which allows conditions to be imposed on public processions and assemblies.