PARIS (AP) — The rumble of armored police trucks and the hiss of tear gas filled central Paris on Saturday, as French riot police fought to contain thousands of yellow-vested protesters venting their anger against the government in a movement that has grown more violent by the week.

A ring of steel surrounded the president's Elysee Palace — a key destination for the protesters — as police stationed trucks and reinforced metal barriers throughout the neighborhood.

Stores along the elegant Champs-Elysees Avenue and the posh Avenue Montaigne boarded up their windows as if bracing for a hurricane...