Cars were torched and shops burnt in central Paris last night after the seventh big protest in eight days against the government's controversial employment law ended in clashes between hooded youths and riot police. The youths, some of whom had come in from the suburbs, grouped on the pavements on the Esplanade des Invalides, one of Paris's main boulevards, and armed themselves with baseball bats, wooden sticks and metal bars. As students and sixth formers moved towards the city centre chanting protests against the Prime Minister, Dominique de Villepin, and the Interior Minister, Nicolas Sarkozy, the armed youths began to...