Extinction Rebellion climate protesters climbed on top of a train in east London during rush hour on Thursday, drawing the ire of commuters.
The video showed one of the activists being dragged down from the top of the train and onto the ground as angry commuters surrounded him.
A Transport for London staff member attempted to stop commuters from clashing with the man, shouting "don't do it" as they tried to attack him.
More than 1,400 people have been arrested since the group began blocking roads, bridges and airports in London a week ago to demand faster action on climate change. Most have been released without being charged.
More No Comment
Bangladesh floods recede but millions still marooned
Turtles freed in Tunisia with tracking monitor
Priest holds mass in basement of Ukraine church amid sounds of Russian shelling
50 couples get married in mass wedding ceremony in Brazil
No comment videos of the week
Residents inspect damage after huge fire in Manila
Ukrainian woman, 3 children survive house bombing
"Russian Hulk" sets world record by pulling three helicopters
37 years after massacre, families receive remains
An honorary Palme d'Or for Tom Cruise at the Cannes Film Festival
Feminist groups protest against femicides in Mexico
Ukrainian soldiers blow up bridge in Luhansk region
An American activist has been carrying his rubbish for a month.
Mass arrests in Armenia during anti-government protests
Middle school student in Afghanistan makes model vehicles from waste