Our correspondant Anelise Bourges filed this report in the late afternoon on Saturday.
"It has been another day of extraordinary levels of violence here in Paris. Cars have been torched and litter the streets.
Shop windows on the othr side of the road are completely shattered. It's going to take some time to clean up this mess. But of course this is precisely what authorities wanted to avoid. A repeat of this kind of damage in the French capital.
The authorities put together an unprecedented security deployment with 90.000 security personnel deployed across the country for the so called 'Act 4' of the yellow vest protest, a movement that has been shaking this country.
That didn't seem to contain protesters however. A thousand people were detained, and several hundred remain in custody tonight. The question now is what is next for this movement that has taken French politicians by surprise? Will the French President Emmanuel Macron be able to turn things around when thousands of people are out in the streets demanding his resignation?"