Yellow vest (Gilets jaunes) protestors occupy a traffic circle close to Feyzin oil refinery, near Lyon, central eastern France on December 17, 2018. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

A Yellow vest (Gilet jaune) protestor gestures in front of a truck close to Feyzin oil refinery, near Lyon, central eastern France on December 17, 2018. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors occupy a traffic circle Near Feyzin Refinery, on December 17, 2018, central eastern France. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors stand near a brasero as they occupy a traffic circle close to Feyzin oil refinery, near Lyon, central eastern France on December 17, 2018. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors stand near a brasero as they occupy a traffic circle close to Feyzin oil refinery, near Lyon, central eastern France on December 17, 2018. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors stand near a Christmas tree as they occupy a traffic circle Near Feyzin Refinery, on December 17, 2018, central eastern France. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors gesture as they occupy a traffic circle Near Feyzin Refinery, on December 17, 2018, central eastern France. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors gesture as they occupy a traffic circle Near Feyzin Refinery, on December 17, 2018, central eastern France. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors occupy a traffic circle Near Feyzin Refinery, on December 17, 2018, central eastern France. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors occupy a traffic circle close to Feyzin oil refinery, near Lyon, central eastern France, on December 17, 2018. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

A man gestures as Yellow vest (Gilets jaunes) protestors occupy a traffic circle close to Feyzin oil refinery, near Lyon, central eastern France, on December 17, 2018. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

A man shows his buttocks as Yellow vest (Gilets jaunes) protestors occupy a traffic circle close to Feyzin oil refinery, near Lyon, central eastern France, on December 17, 2018. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors occupy a traffic circle close to Feyzin oil refinery, near Lyon, central eastern France, on December 17, 2018. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors sit near a brasero as they occupy a traffic circle close to Feyzin oil refinery, near Lyon, central eastern France, on December 17, 2018. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)

Yellow vest (Gilets jaunes) protestors open a fridge as they occupy a traffic circle close to Feyzin oil refinery, near Lyon, central eastern France, on December 17, 2018. - The Yellow vests experiment solidarity and feel like a "family" on the blockade near Feyzin refinery, AFP reported on December 18, 2018. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)