Major museums in Paris closed and authorities deployed a sizable police force for a round of new protests Saturday across France, hoping to prevent a repeat of last week’s violent unrest that shocked the country.

Scenes of looting, burned-out cars and attacks on public buildings left the impression that the government had lost control, as groups of masked vandals targeted businesses in Paris and other city centers.

Interior Minister Laurent Nuñez said as many as 70,000 officers will be deployed nationwide, along with helicopters, armored vehicles and water cannons.

A massive turnout is expected again after more than half a million took to the streets last week.

Museums are closed and shopkeepers are worried

Major museums including the Louvre, Orsay Museum, Picasso Museum and Grand Palais — where a major Cézanne exhibit is on display — are closed Saturday. Art Basel, one of the world’s most prestigious contemporary art fairs, opened to the public Friday, but only for the day, with the threat of unrest prompting organizers to cancel the weekend program.

Parisian shopkeepers have been barricading their stores all week. Near Place de la République in Paris, one of last weekend’s hot spots, a bank branch and other businesses were boarded up with wooden panels to deter potential looters.

Following the unrest, Paris police prefect Patrice Faure urged Parisian shopkeepers to hire security guards. He later clarified that protecting business owners and their establishments is the responsibility of the government.

Some 3,000 shops across France were damaged or looted last weekend.

Some protests have been banned

Protest marches are scheduled in Paris and Marseille, but some other rallies, including in Lyon, Nice and Montpellier, have been banned by local authorities. Cities outside Paris were hit hard by the unrest. In Limoges, a suspected arson nearly destroyed the 19th-century city hall.

Trade unions have criticized the bans, calling them violations of freedom of expression, which is protected by the constitution.

President Emmanuel Macron, a centrist, entered the crisis in the final stretches of his term, with his popularity at its lowest since he took office in 2017. He has said that the measures are needed to protect city centers, businesses and public buildings.

Saturday’s demonstration in the city of Orléans, about 110 kilometers (70 miles) south of Paris, will also be closely watched.

Read More: Paris shuts museums and police deploy in big numbers for new protests across France