Already on Thursday night, police used tear gas to clear demonstrators after a fire was lit at the Place de la Concorde, and similar scenes unfolded across France.
The ensuing unrest saw 310 people arrested around the country, including 258 in Paris, Interior Minister Gerald Darmanin said.
"The opposition is legitimate, the protests are legitimate, but wreaking havoc is not," he said.
According to polls, two-thirds of French people oppose the pensions overhaul.