PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security measures are taken as protesters wearing yellow vests (gilets jaunes) gather to stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : An injured yellow vest demonstrator is seen during a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security measures are taken as protesters wearing yellow vests (gilets jaunes) gather to stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security measures are taken as protesters wearing yellow vests (gilets jaunes) gather to stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security measures are taken as protesters wearing yellow vests (gilets jaunes) gather to stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security measures are taken as protesters wearing yellow vests (gilets jaunes) gather to stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security officials are seen as a protester wearing a yellow vest (gilets jaunes) laying on the ground during a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security officials are seen as protesters wearing yellow vests (gilets jaunes) gather to stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security officials gather as protesters wearing yellow vests (gilets jaunes) gather to stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security measures are taken as protesters wearing yellow vests (gilets jaunes) gather to stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) gather to stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) gather to stage a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : An injured yellow vest demonstrator receives treatment during a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : An injured yellow vest demonstrator receives treatment during a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : An injured yellow vest demonstrator receives treatment during a protest against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security forces stand guard during yellow vests' (gilets jaunes) protests against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security forces stand guard during yellow vests' (gilets jaunes) protests against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security forces stand guard during yellow vests' (gilets jaunes) protests against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security forces intervene protesters during yellow vests' (gilets jaunes) protests against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security forces intervene protesters during yellow vests' (gilets jaunes) protests against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security forces stand guard during yellow vests' (gilets jaunes) protests against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security forces stand guard during yellow vests' (gilets jaunes) protests against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security forces stand guard during yellow vests' (gilets jaunes) protests against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Security forces stand guard during yellow vests' (gilets jaunes) protests against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

AMSTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest at Dam Square in Amsterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

AMSTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest at Dam Square in Amsterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

AMSTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest at Dam Square in Amsterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

AMSTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest at Dam Square in Amsterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

ROTTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest as they march on Erasmus Bridge in Rotterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

ROTTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest as they march on Erasmus Bridge in Rotterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

ROTTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest as they march on Erasmus Bridge in Rotterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

ROTTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest as they march on Erasmus Bridge in Rotterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

ROTTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest as they march on Erasmus Bridge in Rotterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

ROTTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest as they march on Erasmus Bridge in Rotterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

ROTTERDAM, NETHERLANDS - DECEMBER 15: Yellow vests stage a protest as they march on Erasmus Bridge in Rotterdam, Netherlands on December 15, 2018. ( Abdullah Aşıran - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Health team members carry an injured protester with a stretcher during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Health team members carry an injured protester with a stretcher during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Health team members carry an injured protester with a stretcher during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French security forces intervene in protesters during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French security forces intervene in protesters during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French security forces intervene in protesters during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French security forces intervene in protesters during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French security forces intervene in protesters during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French security forces intervene in protesters during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French security forces intervene in protesters during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French security forces intervene in protesters during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French security forces intervene in protesters during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French security forces intervene in protesters during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Health team members carry injured protesters for treatment during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Health team members carry injured protesters for treatment during yellow vests' (gilets jaunes) protest against rising oil prices and deteriorating economic conditions in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising costs of living they blame on high taxes in Paris, France on December 15, 2018. French police and gendarmerie units took security measures. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising costs of living they blame on high taxes in Paris, France on December 15, 2018. French police and gendarmerie units took security measures. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising costs of living they blame on high taxes at the National Academy of Music in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising costs of living they blame on high taxes at the National Academy of Music in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French police and gendarmerie units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : French police and gendarmerie units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising costs of living they blame on high taxes at the National Academy of Music in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising costs of living they blame on high taxes at the National Academy of Music in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising costs of living they blame on high taxes at the National Academy of Music in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising costs of living they blame on high taxes at the National Academy of Music in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising costs of living they blame on high taxes at the National Academy of Music in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Mustafa Yalçın - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Protesters wearing yellow vests (gilets jaunes) demonstrate against rising oil prices and deteriorating economic conditions along the Champs-Elysees Avenue in Paris, France on December 15, 2018. ( Dursun Aydemir - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )

PARIS, FRANCE - DECEMBER 15 : Mounted police units take security measures around the National Academy of Music during the demonstration of the yellow vests (gilets jaunes) in Paris, France on December 15, 2018. ( Elyxandro Cegarra - Anadolu Agency )