Buildings and vehicles have been torched and stores looted, and the violence has plunged President Emmanuel Macron into the gravest crisis of his leadership since the Yellow Vest protests that started in 2018. Unrest has flared nationwide, including in cities such as Marseille, Lyon, Toulouse, Strasbourg and Lille as well as Paris where Nahel M., a 17-year-old of Algerian and Moroccan descent, was shot on Tuesday in the Nanterre suburb.