Sirens wail. police patrolling the streets of paris last night, trying to prevent a repeat of scenes like these. commotion. on thursday, what had been largely peaceful protests against the president and his pension reforms turned violent. that night, piles of uncollected rubbish in the capital were set alight. the french authorities say almost 1000 fires were started. glass smashes. this was nantes. and similar scenes on the streets of strasbourg. commotion. and in bordeaux, the entrance to the town hall was set alight. this city, along with paris, was due to be visited by king charles and cam...