At least 108 police officers have been injured in clashes across France with protesters angry at pension reforms, the interior minister has said. Gérald Darmanin said such a large number of police wounded was extremely rare, adding that 291 people had been arrested during the unrest. Hundreds of thousands have been taking part in May Day demonstrations against President Emmanuel Macron's reforms. Most were peaceful but radical groups threw petrol bombs and fireworks. Police responded with tear gas and water cannon.