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Catalans link arms in a bid to create a 400-kilometre (250-mile) human chain, part of a campaign for independence from Spain during Catalonia National Day, or Diada, in front of the Sagrada Familia basilica in Barcelona, on September 11, 2013. Independence-seeking Catalans marshalled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. LLUIS GENE/AFP/Getty Images ( 522794256 )

BARCELONA, SPAIN - SEPTEMBER 11: President of Catalonia Artur Mas (C) applauds during an official celebratory event for The National Day of Catalonia on September 11, 2013 in Barcelona, Spain. Thousands of Catalans celebrating the 'Diada Nacional' are holding demostrations to demand the right to hold a self-determination referendum next year. (Photo by David Ramos/Getty Images) ( 180295791 )

BARCELONA, SPAIN - SEPTEMBER 11: Demonstrators march during The National Day of Catalonia on September 11, 2013 in Barcelona, Spain. Thousands of Catalans celebrating the 'Diada Nacional' are holding demostrations to demand the right to hold a self-determination referendum next year. (Photo by David Ramos/Getty Images) ( 180312306 )

Catalans link arms in a bid to create a 400-kilometre (250-mile) human chain, part of a campaign for independence from Spain during Catalonia National Day, or Diada, in front of the Pedrera in Barcelona, on September 11, 2013. Independence-seeking Catalans marshalled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSEP LAGO/AFP/Getty Images ( 522794505 )

A couple draped with Catalonian national flags kiss in Barcelona, Spain Wednesday Sept. 11, 2013. Several hundred thousand people demanding an independent Catalonia have joined hands in an attempt to form a 400-kilometer (250-mile) human chain across the northeastern region of Spain. The demonstration Wednesday aimed to illustrate local support for political efforts to break away from Spain. Organizers estimated about 400,000 people took part in the human chain. Catalonia claims a deep cultural difference based on its language, which is spoken side-by-side with Spanish in the wealthy region. (AP Photo/Paco Serinelli) ( Spain Catalonia Independence )

People walk wrapped in Catalonia's flag "Estelada" during celebrations for Catalonia National Day, or Diada, in Barcelona on September 11, 2013. Independence-seeking Catalans marshalled their forces today in a bid to create a 400-kilometre (250-mile) human chain they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSEP LAGO/AFP/Getty Images ( 522787733 )

People form a human chain in Barcelona, Spain Wednesday Sept. 11, 2013. Several hundred thousand people demanding an independent Catalonia have joined hands in an attempt to form a 400-kilometer (250-mile) human chain across the northeastern region of Spain. The demonstration Wednesday aimed to illustrate local support for political efforts to break away from Spain. Organizers estimated about 400,000 people took part in the human chain. Catalonia claims a deep cultural difference based on its language, which is spoken side-by-side with Spanish in the wealthy region. (AP Photo/Paco Serinelli) ( Spain Catalonia Independence )

A child rides as a passenger on a bike sporting Catalonia's flag "Estelada" during celebrations for Catalonia National Day, or Diada, in Barcelona on September 11, 2013. Independence-seeking Catalans marshalled their forces today in a bid to create a 400-kilometre (250-mile) human chain they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSEP LAGO/AFP/Getty Images ( 522787754 )

Giants walk past Catalans gathering in a bid to create a 400-kilometre (250-mile) human chain, part of a campaign for independence from Spain during Catalonia National Day, or Diada, on Passeig de Gracia in Barcelona, on September 11, 2013. Independence-seeking Catalans marshalled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSEP LAGO/AFP/Getty Images ( 522795493 )

Activists calling for the independance of Catalonia, currently a region of Spain, take part in a 'human chain' during a protest on September 11, 2013, in Perthus, southern France. Independence-seeking Catalans marshalled their forces today for a 400-kilometre (250-mile) human chain in a bold push to break from Spain despite fierce opposition from Madrid. RAYMOND ROIG/AFP/Getty Images ( 522795930 )

Activists calling for the independance of Catalonia, currently a region of Spain, take part in a 'human chain' during a protest on September 11, 2013, in Perthus, southern France. Independence-seeking Catalans marshalled their forces today for a 400-kilometre (250-mile) human chain in a bold push to break from Spain despite fierce opposition from Madrid. RAYMOND ROIG/AFP/Getty Images ( 522795458 )

Activists calling for the independance of Catalonia, currently a region of Spain, take part in a 'human chain' during a protest on September 11, 2013, in Perthus, southern France. Independence-seeking Catalans marshalled their forces today for a 400-kilometre (250-mile) human chain in a bold push to break from Spain despite fierce opposition from Madrid. RAYMOND ROIG/AFP/Getty Images ( 522795463 )

Catalans react as they create a 400-kilometre (250-mile) human chain, part of a campaign for independence from Spain during Catalonia National Day, or Diada, in Alcanar, on September 11, 2013. Independence-seeking Catalans marshalled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSE JORDAN/AFP/Getty Images ( 522794838 )

Catalans react as they surround a giant Independentist Catalan flag (Senyara), as part of a campaign for independence from Spain during Catalonia National Day, or Diada, in Alcanar, on September 11, 2013. Independence-seeking Catalans marshalled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSE JORDAN/AFP/Getty Images ( 522794878 )

Activists calling for the independance of Catalonia, currently a region of Spain, form a human pyramid during a protest on September 11, 2013, in Perthus, southern France. Independence-seeking Catalans marshalled their forces today for a 400-kilometre (250-mile) human chain in a bold push to break from Spain despite fierce opposition from Madrid. RAYMOND ROIG/AFP/Getty Images ( 522797891 )

Catalans wait prior to creating a 400-kilometre (250-mile) human chain, part of a campaign for independence from Spain during Catalonia National Day, or Diada, outside FC Barcelona's Camp Nou stadium in Barcelona, on September 11, 2013. Independence-seeking Catalans marshaled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. QUIQUE GARCIA/AFP/Getty Images ( 522796005 )

BARCELONA, SPAIN - SEPTEMBER 11: A Catalonia Pro-Independence flag hangs at a bar during The National Day of Catalonia on September 11, 2013 in Barcelona, Spain. Thousands of Catalans celebrating the 'Diada Nacional' are holding demostrations to demand the right to hold a self-determination referendum next year. (Photo by David Ramos/Getty Images) ( 180295784 )

A picture of Spain's King Juan Carlos burns after a member of radical left-wing Catalan independentist political party CUP (Popular Unity Candidates) sets its fire in front of an Independentist flag in Barcelona, on September 11, 2013. Independence-seeking Catalans marshalled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSEP LAGO/AFP/Getty Images ( 522800837 )

Members of radical left-wing Catalan independentist political party CUP (Popular Unity Candidates) set fire to (FromL) French, European and Spanish flags in Barcelona, on September 11, 2013. Independence-seeking Catalans marshalled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSEP LAGO/AFP/Getty Images ( 522800871 )

People carry Catalonia's flag "Estelada" during celebrations for Catalonia National Day, or Diada, in Barcelona on September 11, 2013. Independence-seeking Catalans marshalled their forces today in a bid to create a 400-kilometre (250-mile) human chain they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSEP LAGO/AFP/Getty Images ( 522787696 )

Catalans link arms in a bid to create a 400-kilometre (250-mile) human chain, part of a campaign for independence from Spain during Catalonia National Day, or Diada, on Passeig de Gracia in Barcelona, on September 11, 2013. Independence-seeking Catalans marshalled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSEP LAGO/AFP/Getty Images ( 522795725 )

A young boy holding an Independentist Catala flag (Senyera) smiles as Catalans gather in a bid to create a 400-kilometre (250-mile) human chain, part of a campaign for independence from Spain during Catalonia National Day, or Diada, outside the FC Barcelona's Camp Nou stadium in Barcelona, on September 11, 2013. Independence-seeking Catalans marshaled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. QUIQUE GARCIA/AFP/Getty Images ( 522796724 )

People wave Catalonian national flags in Barcelona, Spain Wednesday Sept. 11, 2013. Several hundred thousand people demanding an independent Catalonia have joined hands in an attempt to form a 400-kilometer (250-mile) human chain across the northeastern region of Spain. The demonstration Wednesday aimed to illustrate local support for political efforts to break away from Spain. Organizers estimated about 400,000 people took part in the human chain. Catalonia claims a deep cultural difference based on its language, which is spoken side-by-side with Spanish in the wealthy region. (AP Photo/Paco Serinelli) ( Spain Catalonia Independence )

People march along the street in Barcelona, Spain Wednesday Sept. 11, 2013. Several hundred thousand people demanding an independent Catalonia joined hands in an attempt to form a 400-kilometer (250-mile) human chain across the northeastern region of Spain. The demonstration Wednesday aimed to illustrate local support for political efforts to break away from Spain. Organizers estimated about 400,000 people took part in the human chain. Catalonia claims a deep cultural difference based on its language, which is spoken side-by-side with Spanish in the wealthy region. (AP Photo/Joan Manuel Baliellas) ( Spain Catalonia Independence )

A dog sports Catalonia's flag "Estelada" around its neck during celebrations for Catalonia National Day, or Diada, in Barcelona on September 11, 2013. Independence-seeking Catalans marshalled their forces today in a bid to create a 400-kilometre (250-mile) human chain they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSEP LAGO/AFP/Getty Images ( 522787759 )

BARCELONA, SPAIN - SEPTEMBER 11: People attend an official celebratory event for The National Day of Catalonia on September 11, 2013 in Barcelona, Spain. Thousands of Catalans celebrating the 'Diada Nacional' are holding demostrations to demand the right to hold a self-determination referendum next year. (Photo by David Ramos/Getty Images) ( 180295788 )

Youths hold Independentist Catalan flags as part of a campaign for independence from Spain during Catalonia National Day, or Diada, in Alcanar, on September 11, 2013. Independence-seeking Catalans marshalled their forces today to make a human link they say will stretch across 86 cities, towns and villages along the coast of the northeastern region on the Mediterranean, passing landmarks such as the Sagrada Familia basilica in Barcelona and the city's Camp Nou football stadium. JOSE JORDAN/AFP/Getty Images ( 522794799 )