French police battled protesters and looters for a second day Sunday as the country reeled from the violent chaos left by a day of cost-of-living demonstrations in which 2,000 people were arrested nationwide. Paris city workers had not finished clearing up the torched cars, smashed shopfronts and burnt debris from Saturday’s unrest when the new troubles started and political recriminations erupted. Agence France-Presse journalists said several hundred people gathered in Place de la Republique in...