"A worker cleans a graffiti reading ""long term unrest"" near the Champs-Elysees avenue, Friday, Dec. 7, 2018 in Paris. France was mobilizing tens of thousands of police officers and closing landmarks including the Eiffel Tower and the Louvre as authorities warned that anti-government protests on Saturday could be even more violent than the ones that have crippled the country for weeks. (AP Photo/Francois Mori)"
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