There was a violent start to the day at London's Canning Town underground station on Thursday (October 17).
Climate change activists disrupted rail services - sparking a physical confrontation between angry commuters and an Extinction Rebellion protester who had climbed onto the roof of a train.
Social media video showed tensions quickly escalating as one man was dragged from the roof.
British Transport Police said they had responded to incidents at other stations too.
83 year-old Phil Kingston glued himself to a train at Shadwell Station, near to London's Canary Wharf financial district (SOUNDBITE) (English) 83-YEAR OLD CAMPAIGNER, PHIL KINGSTON, AT SHADWELL STATION, SAYING: "I'm doing this primarily for my grandchildren because I've learned that what we're heading towards at the moment is an increase in temperature of over three degrees centigrade.
Suffering and death on an enormous scale.
Loss of food supplies.
And I'm just here to be ring an alarm bell." Thursday's protests were quickly condemned by the city's mayor Sadiq Khan who described the action as illegal and dangerous.
Extinction Rebellion launched a wave of civil disobedience on October 7 to highlight the risks posed by climate change and the accelerating loss of plant and animal species.
Police in London said on Wednesday (October 16) they had arrested over 1,600 people since the protests started.
The XR movement promotes the use of peaceful protests.
But the frustrations of some wanting to use the underground network on Thursday led to far more chaotic scenes than have been seen in previous days.