Protesters wave Catalan independence flags in the street in Barcelona, Spain, on Friday, following a week of demonstrations over the prison sentences given to separatist politicians by Spain's Supreme Court. Clara Margais/Getty Images hide caption
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Catalan regional President Carles Puigdemont attends a ceremony commemorating the 77th anniversary of the death of Catalan leader Lluis Companys at the Montjuic Cemetery in Barcelona, Spain, on Sunday. Manu Fernandez/AP hide caption
People hold a banner reading "I am not afraid" in the Catalan language during an Aug. 26 demonstration condemning the attacks that killed 16 people last month in Barcelona. Manu Fernandez/AP hide caption
President of the Catalan regional government Carles Puigdemont (center) announced a referendum for independence from Spain on Friday in Barcelona. Lluis Gene/AFP/Getty Images hide caption