FILE - In this Oct. 1, 2017 file photo, Spanish national police block people trying to reach a voting site at a school assigned to be a polling station by the Catalan government for a secession referendum in Barcelona, Spain. Spain’s central government threatened on Tuesday, Dec. 11, 2018, to send in national police to ensure security in Catalonia if regional authorities fail to stop recent disruptions by pro-independence protesters on major highways. (AP Photo/Emilio Morenatti, File)
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