Olympic gold medal-winning canoeist Etienne Stott was one of hundreds of people arrested during climate change protests in London over the weekend.
The 39-year-old Briton, who won C2 canoe slalom gold at London 2012, was carried from Waterloo Bridge by four police officers on Sunday evening.
He had shouted of the “ecological crisis” and earlier given a speech while sitting on top of a bus stop.
Speaking on Saturday, Stott said the protests were “really important”.
“I don’t think there is anything more meaningful that I could be doing in my life right now,” said Stott.
“I feel like it is really tough to disrupt people’s lives like this, but this is really important because I believe the disruption that will come down the line if we do not declare a climate emergency and do not tackle this situation of climate change, it will just dwarf any inconvenience here today.”
As of 19:00 BST on Sunday, 963 people had been arrested during the Extinction Rebellion protests in the UK capital, but only 40 people have been charged.
Thousands of people have been campaigning at sites including Oxford Circus, Waterloo Bridge, Westminster and Marble Arch.