France is confronting a major intelligence failure after authorities badly underestimated the scale of nationwide protests that descended into riots and looting.

The days of chaos have prompted French President Emmanuel Macron to order a security review as senior officials acknowledged police "lost control" in several major cities and senior government officials have offered to resign after they failed to predict the level of pandemonium.

Some 550,000 people joined 110 marches nationwide Saturday, according to France's Interior Ministry, far exceeding an intelligence estimate of roughly 200,000 demonstrators. Organizers put turnout even higher, at 800,000.

Cars burned in the streets, more than 1,500 stores were reportedly ransacked or destroyed and public buildings were attacked across the country. In Limoges, rioters broke into and torched a 19th-century city hall that had survived both world wars, causing its roof to collapse.

By Monday, the Louvre remained closed as student protesters blocked its entrances, extending the disruption into another day. The unrest overwhelmed some 60,000 police, gendarmes and other security personnel deployed nationwide. Nearly 1,000 law enforcement officers and firefighters were injured, at least 2,400 people were arrested and French authorities estimate some 3,000 businesses sustained damage.

As crowds swelled, police were stretched across multiple flashpoints while groups of masked rioters smashed storefronts, set fires and clashed with security forces. In some cities, authorities were unable to keep looters from moving through commercial districts even as officers struggled to contain the larger demonstrations.

By Monday, Interior Minister Laurent Nuñez was acknowledging what shopkeepers and residents had already witnessed. "Yes, Saturday, in certain large cities, we lost control," Nuñez said.

He acknowledged a "lack of anticipation" ahead of the demonstrations and said authorities had underestimated not only the number of protesters but the violent groups that would exploit the unrest.

Nuñez offered his resignation to Macron. The president refused it and instead ordered a review of what the Élysée described as failures in planning and intelligence, demanding an accounting of how authorities had been caught so badly off guard. Justice Minister Gérald Darmanin was even more direct.

"We unquestionably failed," Darmanin said, pointing specifically to intelligence and France's difficulty tracking and confronting the ultra-left. The failure is particularly striking because the unrest did not emerge without warning. The warning signs had been building for weeks.

The unrest began in September with high school students protesting teacher shortages, deteriorating school buildings and other conditions in classrooms around Paris. The movement quickly spread nationwide, drawing teachers, labor unions and other groups frustrated by rising living costs and declining public services.

Violence had already begun creeping into the demonstrations. Students set fires at schools, cars were torched and protesters clashed with riot police as authorities made thousands of arrests. French intelligence services were watching the shift.

At an Oct. 1 government crisis meeting, intelligence officials assessed that the movement had reached a "tipping point" from school blockades toward urban violence and attributed its origins to the hard-left France Unbowed party and its allies, Reuters reported. Yet little more than two weeks later, authorities were caught off guard by the scale of what hit the streets.

Saturday brought together students, trade unionists, Yellow Vest veterans and other groups under a loose "convergence of struggles." Hundreds of thousands marched peacefully, while smaller groups of masked rioters broke away, looting stores, setting fires and attacking police.

The violence has since ignited a separate political fight over immigration. President Donald Trump blamed the destruction on France's migration policies, writing Monday that "the migrants have taken over France" and urging the country to close its borders. Other right-wing political leaders across Europe have made similar arguments.

French authorities, however, have not blamed immigrants for the violence. Macron and his government have instead accused ultra-left militants and criminals of exploiting demonstrations rooted largely in education, living costs and public services.

The unrest is nevertheless intensifying a political battle already reshaping France ahead of its 2027 presidential election, giving the right fresh ammunition on immigration, crime and the government's ability to maintain public order.

Marine Le Pen's National Rally has seized on the violence to argue that Macron's government has lost control of the country, while other figures on the French right have pushed for tougher policing and immigration restrictions.

The images of burning buildings, ransacked stores and overwhelmed police are landing at a particularly vulnerable moment for France's political establishment. Macron cannot seek a third consecutive term in 2027, leaving an open presidential contest as voters increasingly identify immigration, security and purchasing power among the country's major political concerns.

The riots have also widened a debate over whether the breakdown reflects a failure of policing, deeper economic and social grievances or years of government policy on immigration and integration — competing explanations that are likely to shape France's political fight long after the streets are cleared.

For Macron's government, the immediate question is more concrete: how security services that were already tracking an increasingly volatile protest movement still failed to anticipate the scale of Saturday's violence.