BARCELONA, SPAIN - SEPTEMBER 11:  People hold Pro-independence Catalan flags in a demonstration calling for independence during the Catalonia's National Day on September 11, 2012 in Barcelona, Spain. Thousands of Catalans took to the streets of Barcelona demanding a split from Spain and control of their own economy under the slogan 'Catalonia: New European State' on Catalonia's National Day. The Diada Nacional is held every September 11 to remember the defeat of the Catalan troops in 1714.  (Photo by David Ramos/Getty Images)