A rally held Tuesday in Paris against the government's pension reform descended into violence when various groups joined in.
It marked the 10th day of a planned mobilization since January, with thousands of workers protesting and walking out in various sectors including transportation, energy and education.
Protests were held in other cities as well, including Lyon, Rennes and Nantes.
Violent groups infiltrated the parade in Paris and once again vandalized street furniture and set fire to garbage cans in the streets, according to an Anadolu correspondent at the scene.
Interior Minister Gerald Darmanin said late Tuesday that 13,000 police officers have been deployed during the demonstrations, including 5,500 in Paris.
The General Labor Confederation announced that more than two million protesters had gathered in France, including 450,000 in Paris, while the Interior Ministry counted 740,000, according to the Le Figaro daily newspaper.
Police have arrested 70 people in Paris, Le Figaro said, citing police sources.
Trade unions decided on a new mass mobilization day on April 6 before the Constitutional Council achieves to examine the pension bill, Le Figaro also said.
