France has been contending for years with violent anarchist gangs known as the Black Blocs, who have been piggybacking on the mass demonstrations of the Yellow Vests to commit acts of vandalism and wreak considerable economic damage. The Black Blocs’ destructive riots on the Champs-Élysées prompted the French government to take tougher preventive measures against the gangs, sparking criticism from both right and left. The government will have to keep fighting the Black Blocs and the radicals among the Yellow Vests, who are trying to achieve their economic and political goals through violence.