Worst riot in a decade engulfs Paris, Macron vows action

Smoke rises above the avenues leading to the Arc de Triomphe on Saturday. (AP Photo/Kamil Zihnioglu)

Demonstrators stand by the words “yellow jackets will triumph” written in black letters at the base of the Arc de Triomphe during a demonstration Saturday in Paris. (AP Photo/Thibault Camus)

Demonstrators wearing yellow jackets face water cannons near the Champs-Elysees avenue during a demonstration Saturday in Paris. (AP Photos/Kamil Zihnioglu)

PARIS — France’s most violent urban riot in more than a decade engulfed some of central Paris on Saturday as “yellow jacket” activists torched cars, smashed windows, looted stores and tagged the Arc de Triomphe with multi-colored graffiti.