PARIS -- Thousands of Parisian police guarded the Eiffel Tower, the Champs Elysees and train stations on Saturday as part of emergency measures enacted in response to text messages and Internet postings that called for "violent actions" in the capital. In Lyon, France's third largest city, police fired tear gas to disperse stone-hurling youths at the historic Place Bellecour. It was the first time in 17 days of unrest that youths clashed with police in a major city. Hours earlier, authorities had announced a weekend curfew in Lyon, barring youths under 18 from being outside without adult supervision between 10...
