HONOLULU - Over the weekend, some of the most iconic streets of Paris were closed to tourists, and instead filled with smoke and tear gas. 

Protesters known as the Yellow Jackets expressed their outrage at rising gas prices and the cost of living.

Some of the activists were looting stores and torching cars along the Champs-Elysees -- and tagging the Arc de Triomphe with graffiti reading, "Yellow Jackets will triumph." 

French President Emmanuel Macron returned from the G20 Summit in Argentina, and toured the damage. He's said to be on the verge of declaring a state of emergency. 

"I was scared, people started flipping over cars," said one witness.

Police used water cannons and tear gas to control the unrest -- they say it left more than 130 people hurt. More than 400 people were arrested during the ongoing protests.