French President Emmanuel Macron on Sunday slammed the “unbridled” violence that erupted in cost-of-living demonstrations across the country, as police battled protesters and looters in new clashes in Paris. Nearly 2,400 people were arrested Saturday in unrest that represented some of the worst urban violence in France in years, with almost 1,000 police and gendarmes injured, seven seriously, the interior ministry said. In an address to the nation, Macron said local authorities would be able to...