Extinction Rebellion activists have staged colorful demonstrations, pulled eye-catching stunts and shut down roads as part of a worldwide protest to demand more action on climate change.

The environmental group, which was founded in the UK, has planned a large coordinated movement — called International Rebellion — in more than 60 global cities.

The biggest protests so far have been in Britain, where thousands of demonstrators have swarmed to sites around central London.

Hundreds of protesters have been arrested around the world so far as activists resist efforts by police to move them in the United States, Canada, Europe and Australia.

While their actions may vary, the international group of activists are united in their aims for governments to act immediately to stop biodiversity loss, "reduce greenhouse gas emissions to net zero by 2025" and be led by "the decisions of citizens' assemblies on climate and ecological justice."

Climate activists hold a banner after climbing atop the roof of the entrance to YouTube's offices in London during the 10th day of demonstrations on October 16.
Climate activists hold a banner after climbing atop the roof of the entrance to YouTube's offices in London during the 10th day of demonstrations on October 16.
Paul Ellis/AFP via Getty Images
The Guardian newspaper environmental journalist and author George Monbiot, right, sits blocking a road with the Co-Leader of Britain's Green Party Jonathan Bartley at the bottom of Trafalgar Square on October 16.
The Guardian newspaper environmental journalist and author George Monbiot, right, sits blocking a road with the Co-Leader of Britain's Green Party Jonathan Bartley at the bottom of Trafalgar Square on October 16.
Matt Dunham/AP
An Extinction Rebellion climate protester sits atop a fence pillar on the perimeter of the houses of parliament in London, on Tuesday October 15.
An Extinction Rebellion climate protester sits atop a fence pillar on the perimeter of the houses of parliament in London, on Tuesday October 15.
Victoria Jones/AP
Protesters demonstrate outside the BlackRock headquarters in Throgmorton Avenue in London on Monday, October 14.
Protesters demonstrate outside the BlackRock headquarters in Throgmorton Avenue in London on Monday, October 14.
Jonathan Brady/AP
A protester stands near a policeman during a demonstration in London.
A protester stands near a policeman during a demonstration in London.
Jonathan Brady/AP
A young child waves an Extinction Rebellion flag outside of the Bank of England during the eighth day of demonstrations October 14.
A young child waves an Extinction Rebellion flag outside of the Bank of England during the eighth day of demonstrations October 14.
Isabel Infantes/AFP via Getty Images
Doctors join Extinction Rebellion activists to demonstrate for the sixth day running in Trafalgar Square on October 12.
Doctors join Extinction Rebellion activists to demonstrate for the sixth day running in Trafalgar Square on October 12.
Chris J Ratcliffe/Getty Images
Protesters block a road during an Extinction Rebellion protest on Saturday, October 12, in Prague, Czech Republic.
Protesters block a road during an Extinction Rebellion protest on Saturday, October 12, in Prague, Czech Republic.
Gabriel Kuchta/Getty Images
Oisin O'Connor and his sister, Eve, help wallpaper the front of the Department of Communications, Climate Action and Environment in Dublin, Ireland, on Friday, October 11.
Oisin O'Connor and his sister, Eve, help wallpaper the front of the Department of Communications, Climate Action and Environment in Dublin, Ireland, on Friday, October 11.
Brian Lawless/PA Media via Reuters
Activists bury their heads in the sand on Sydney's Manly Beach on October 11.
Activists bury their heads in the sand on Sydney's Manly Beach on October 11.
Brook Mitchell/Getty Images
Protesters chain themselves to barrels on Berlin's Marschall Bridge.
Protesters chain themselves to barrels on Berlin's Marschall Bridge.
Britta Pedersen/dpa via AP
Police block the entrance to the BBC New Broadcasting House in London during an Extinction Rebellion protest on October 11.
Police block the entrance to the BBC New Broadcasting House in London during an Extinction Rebellion protest on October 11.
Yui Mok/AP
Climate activists participate in an Extinction Rebellion protest in New York's Times Square on Thursday, October 10.
Climate activists participate in an Extinction Rebellion protest in New York's Times Square on Thursday, October 10.
Andrew Kelly/Reuters
Extinction Rebellion demonstrators block an entrance to the City Airport in London on October 10.
Extinction Rebellion demonstrators block an entrance to the City Airport in London on October 10.
Matt Dunham/AP
Extinction Rebellion protesters march as a "human forest" in Dublin. They were heading to Leinster House to call for a complete remodeling of forestry policy.
Extinction Rebellion protesters march as a "human forest" in Dublin. They were heading to Leinster House to call for a complete remodeling of forestry policy.
Brian Lawless/AP
A demonstrator displays a banner at the City Airport in London.
A demonstrator displays a banner at the City Airport in London.
Matt Dunham/AP
Mothers gather ahead of the Extinction Rebellion "nurse-in" road blockade in London on Wednesday, October 9.
Mothers gather ahead of the Extinction Rebellion "nurse-in" road blockade in London on Wednesday, October 9.
Jonathan Brady/AP
Extinction Rebellion protesters wear masks in Berlin on October 9. From left, the masks represent German Economy Minister Peter Altmaier, German Chancellor Angela Merkel and German Vice Chancellor Olaf Scholz.
Extinction Rebellion protesters wear masks in Berlin on October 9. From left, the masks represent German Economy Minister Peter Altmaier, German Chancellor Angela Merkel and German Vice Chancellor Olaf Scholz.
Axel Schmidt/AFP/Getty Images
Extinction Rebellion told CNN on October 9 that activists now control three sites in Berlin.
Extinction Rebellion told CNN on October 9 that activists now control three sites in Berlin.
Christoph Soeder/dpa via AP Images
Stanley Johnson, father of British Prime Minister Boris Johnson, joins protesters in London's Trafalgar Square on October 9. Days before, his son described Extinction Rebellion protesters as "hemp-smelling," "uncooperative crusties."
Stanley Johnson, father of British Prime Minister Boris Johnson, joins protesters in London's Trafalgar Square on October 9. Days before, his son described Extinction Rebellion protesters as "hemp-smelling," "uncooperative crusties."
Jonathan Brady/AP
The protests often dip into the theatrical. On October 9, anti-aircraft protesters held signs in Trafalgar Square a day before a planned "'Hong Kong-style occupation" of the London City Airport.
The protests often dip into the theatrical. On October 9, anti-aircraft protesters held signs in Trafalgar Square a day before a planned "'Hong Kong-style occupation" of the London City Airport.
Jonathan Brady/AP
Activists block a bridge close to the Reichstag building in Berlin on October 9. Extinction Rebellion encourages volunteers to carry out acts of "peaceful civil disobedience to call on government to act on the climate and ecological emergency."
Activists block a bridge close to the Reichstag building in Berlin on October 9. Extinction Rebellion encourages volunteers to carry out acts of "peaceful civil disobedience to call on government to act on the climate and ecological emergency."
Michael Sohn/AP
Activists protest outside Dublin's Government Buildings as Ireland's finance minister unveiled the country's 2020 budget on Tuesday, October 8.
Activists protest outside Dublin's Government Buildings as Ireland's finance minister unveiled the country's 2020 budget on Tuesday, October 8.
Charles McQuillan/Getty Images
Climate activists glue themselves to the entrance of a power company's offices in Amsterdam, Netherlands, on October 8.
Climate activists glue themselves to the entrance of a power company's offices in Amsterdam, Netherlands, on October 8.
Robin Van Lonkhuijsen/AFP via Getty Images
Activists stage a sit-down protest outside Dublin's Government Buildings.
Activists stage a sit-down protest outside Dublin's Government Buildings.
Charles McQuillan/Getty Images
Protesters wearing black stand next to a coffin as they stage a demonstration in front of Berlin's Brandenburg Gate on October 8.
Protesters wearing black stand next to a coffin as they stage a demonstration in front of Berlin's Brandenburg Gate on October 8.
Michele Tantussi/AFP/Getty Images
A man is detained in Melbourne as he takes part in an Extinction Rebellion protest on Monday, October 7. More than 50 people were arrested throughout Australia that day.
A man is detained in Melbourne as he takes part in an Extinction Rebellion protest on Monday, October 7. More than 50 people were arrested throughout Australia that day.
Darrian Traynor/Getty Images
In New York, demonstrators congregate at Washington Square Park as they launched actions around the city on October 7. The protests included pouring fake blood over Wall Street's Charging Bull statue.
In New York, demonstrators congregate at Washington Square Park as they launched actions around the city on October 7. The protests included pouring fake blood over Wall Street's Charging Bull statue.
Timothy A. Clary/AFP/Getty Images
The Red Brigade surrounds police in London on October 7. This crimson-robed troupe is common at Extinction Rebellion protests and is the creation of the Invisible Circus, a street performance group.
The Red Brigade surrounds police in London on October 7. This crimson-robed troupe is common at Extinction Rebellion protests and is the creation of the Invisible Circus, a street performance group.
Chris J Ratcliffe/Getty Images
A driver watches protesters block a city intersection in Melbourne on October 7.
A driver watches protesters block a city intersection in Melbourne on October 7.
Asanka Brendon/AFP/Getty Images
Extinction Rebellion flags fly at a protest in Melbourne.
Extinction Rebellion flags fly at a protest in Melbourne.
Darrian Traynor/Getty Images
A group calling itself the Aged Agitators demonstrates outside London's Houses of Parliament.
A group calling itself the Aged Agitators demonstrates outside London's Houses of Parliament.
Isabel Infantes/AFP/Getty Images
A woman sits down in front of a line of police in Melbourne.
A woman sits down in front of a line of police in Melbourne.
Darrian Traynor/Getty Images
Protesters take part in Extinction Rebellion's global "Week of Action" in Melbourne.
Protesters take part in Extinction Rebellion's global "Week of Action" in Melbourne.
Darrian Traynor/Getty Images