Protesters march through Barcelona during a demonstration to support the unity of Spain on October 8. A bitterly contested independence referendum on October 1 has stoked fierce divisions in the northeastern region of Catalonia and across Spain.
Protesters march through Barcelona during a demonstration to support the unity of Spain on October 8. A bitterly contested independence referendum on October 1 has stoked fierce divisions in the northeastern region of Catalonia and across Spain.
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Thousands of people gather in Barcelona to rally for unity in Spain on October 8.
Thousands of people gather in Barcelona to rally for unity in Spain on October 8.
Riccardo Dodich
Protesters hold Spanish flags during a demonstration against independence for Catalonia on October 8.
Protesters hold Spanish flags during a demonstration against independence for Catalonia on October 8.
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Demonstrators urge a peaceful dialogue to resolve the crisis over Catalan independence on Saturday, October 7, in Madrid, Spain.
Demonstrators urge a peaceful dialogue to resolve the crisis over Catalan independence on Saturday, October 7, in Madrid, Spain.
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Crowds raise their hands during a demonstration October 7 in Barcelona encouraging talks to ease tensions over independence. Catalan nationalists argue the region is a separate nation with its own history, culture and language. But many Catalans also oppose separatism from Spain.
Crowds raise their hands during a demonstration October 7 in Barcelona encouraging talks to ease tensions over independence. Catalan nationalists argue the region is a separate nation with its own history, culture and language. But many Catalans also oppose separatism from Spain.
Emilio Morenatti/AP
People show their hands painted in white during a demonstration urging dialogue on October 7 in Madrid. Neither the Catalan regional government nor the national government in Madrid has been willing to give ground since the referendum.
People show their hands painted in white during a demonstration urging dialogue on October 7 in Madrid. Neither the Catalan regional government nor the national government in Madrid has been willing to give ground since the referendum.
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A woman wears a sticker with the Spanish word for "peace" at a demonstration in Madrid on October 7.
A woman wears a sticker with the Spanish word for "peace" at a demonstration in Madrid on October 7.
GABRIEL BOUYS/AFP/AFP/Getty Images
Protesters with Spanish flags gather to demonstrate against independence for Catalonia in Madrid on October 7.
Protesters with Spanish flags gather to demonstrate against independence for Catalonia in Madrid on October 7.
JAVIER SORIANO/AFP/Getty Images
People attend a protest in Barcelona on Monday, October 2, a day after hundreds were injured in a police crackdown during the banned referendum. The Catalan government claimed victory after pushing forward with the vote despite Spain's Constitutional Court declaring it illegal.
People attend a protest in Barcelona on Monday, October 2, a day after hundreds were injured in a police crackdown during the banned referendum. The Catalan government claimed victory after pushing forward with the vote despite Spain's Constitutional Court declaring it illegal.
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Catalan President Carles Puigdemont greets regional government workers before a meeting at the Palace of the Generalitat in Barcelona on October 2.
Catalan President Carles Puigdemont greets regional government workers before a meeting at the Palace of the Generalitat in Barcelona on October 2.
Manu Fernandez/AP
Independence supporters gather in Barcelona after Catalonia's separatist government <a href="index.php?page=&url=http%3A%2F%2Fwww.cnn.com%2F2017%2F09%2F27%2Feurope%2Fcatalan-referendum-explained%2Findex.html">held a referendum</a> to decide if the region should split from Spain on Sunday, October 1.
Independence supporters gather in Barcelona after Catalonia's separatist government held a referendum to decide if the region should split from Spain on Sunday, October 1.
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A member of the Catalan National Assembly cries at the end of the voting day on October 1.
A member of the Catalan National Assembly cries at the end of the voting day on October 1.
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Spanish riot police remove fences thrown at them as they try to prevent people from voting in Barcelona, Spain, on Sunday, October 1.
Spanish riot police remove fences thrown at them as they try to prevent people from voting in Barcelona, Spain, on Sunday, October 1.
Felipe Dana/AP
Pro-referendum supporters clash with members of the Spanish National Police after police tried to enter a polling station to retrieve ballot boxes.
Pro-referendum supporters clash with members of the Spanish National Police after police tried to enter a polling station to retrieve ballot boxes.
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Pro-referendum supporters lock a gate to a polling station as members of the Spanish National Police arrive to control the area during voting at the Escola Industrial of Barcelona.
Pro-referendum supporters lock a gate to a polling station as members of the Spanish National Police arrive to control the area during voting at the Escola Industrial of Barcelona.
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Spanish National Police clash with pro-referendum supporters in Barcelona.
Spanish National Police clash with pro-referendum supporters in Barcelona.
Manu Fernandez/AP
Pro-independence supporters cover a mock ballot box with Estelada Catalan flags in Pamplona, northern Spain.
Pro-independence supporters cover a mock ballot box with Estelada Catalan flags in Pamplona, northern Spain.
Alvaro Barrientos/AP
Spanish National Police clash with pro-referendum supporters in Barcelona.
Spanish National Police clash with pro-referendum supporters in Barcelona.
Manu Fernandez/AP
People play games in a square where a giant pro-independence Estelada Catalan flag is displayed.
People play games in a square where a giant pro-independence Estelada Catalan flag is displayed.
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A woman celebrates after voting at a polling station in Barcelona on October 1.
A woman celebrates after voting at a polling station in Barcelona on October 1.
Bob Edme/AP
People help a man injured by a rubber bullet fired by Spanish police officers outside the Ramon Llull polling station in Barcelona.
People help a man injured by a rubber bullet fired by Spanish police officers outside the Ramon Llull polling station in Barcelona.
FABIO BUCCIARELLI/AFP/Getty Images
Pro-referendum supporters embrace as Spanish National Police try to remove them from the Ramon Llull school in Barcelona.
Pro-referendum supporters embrace as Spanish National Police try to remove them from the Ramon Llull school in Barcelona.
Emilio Morenatti/AP
People queue to vote at a school in Barcelona.
People queue to vote at a school in Barcelona.
Santi Palacios/AP
A woman casts her vote at a polling station in Barcelona.
A woman casts her vote at a polling station in Barcelona.
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Spanish riot police shoot rubber bullets at people trying to reach a voting site designated by the Catalan government in Barcelona. The deputy mayor of Barcelona said police fired rubber bullets at people as they attempted to vote in the referendum, which Spain's top court has declared illegal. There were reports that police in Girona, Spain, used batons.
Spanish riot police shoot rubber bullets at people trying to reach a voting site designated by the Catalan government in Barcelona. The deputy mayor of Barcelona said police fired rubber bullets at people as they attempted to vote in the referendum, which Spain's top court has declared illegal. There were reports that police in Girona, Spain, used batons.
Emilio Morenatti/AP
A protestor shouts as he holds a Catalan flag during a demonstration called by far-right groups in Barcelona.
A protestor shouts as he holds a Catalan flag during a demonstration called by far-right groups in Barcelona.
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Catalan President Carles Puigdemont, center, arrives to inspect a sports hall as police interve in Girona, Spain. Puigdemont condemned "indiscriminate aggression" against peaceful voters.
Catalan President Carles Puigdemont, center, arrives to inspect a sports hall as police interve in Girona, Spain. Puigdemont condemned "indiscriminate aggression" against peaceful voters.
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A Spanish riot police officer swings a club against would-be voters near a school assigned to be a polling station by the Catalan government in Barcelona.
A Spanish riot police officer swings a club against would-be voters near a school assigned to be a polling station by the Catalan government in Barcelona.
Manu Fernandez/AP
Riot police drag a member of the public away from a school being used as a polling station. Regional authorities said 337 people were injured after Madrid deployed the national police force to close down polling stations. Catalan emergency services confirmed the number to CNN.
Riot police drag a member of the public away from a school being used as a polling station. Regional authorities said 337 people were injured after Madrid deployed the national police force to close down polling stations. Catalan emergency services confirmed the number to CNN.
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People clash with Spanish National Police outside the Ramon Llull school, designated as a polling station by the Catalan government in Barcelona, Spain, early Sunday, October 1. Catalan pro-referendum supporters vowed to ignore a police ultimatum to leave the schools they are occupying to use in a vote seeking independence from Spain.
People clash with Spanish National Police outside the Ramon Llull school, designated as a polling station by the Catalan government in Barcelona, Spain, early Sunday, October 1. Catalan pro-referendum supporters vowed to ignore a police ultimatum to leave the schools they are occupying to use in a vote seeking independence from Spain.
Emilio Morenatti/AP
People try to offer flowers to a civil guard at the entrance of a sports center, assigned to be a referendum polling station by the Catalan government in Sant Julia de Ramis, near Girona, Spain, October 1.
People try to offer flowers to a civil guard at the entrance of a sports center, assigned to be a referendum polling station by the Catalan government in Sant Julia de Ramis, near Girona, Spain, October 1.
Francisco Seco/AP
People attend a demonstration against a referendum on independence for Catalonia on October 1 in Madrid, Spain.
People attend a demonstration against a referendum on independence for Catalonia on October 1 in Madrid, Spain.
JAVIER SORIANO/AFP/AFP/Getty Images
A woman casts her vote in a ballot at a polling station in Barcelona, on October 01 during a referendum on independence for Catalonia.
A woman casts her vote in a ballot at a polling station in Barcelona, on October 01 during a referendum on independence for Catalonia.
JOSEP LAGO/AFP/Getty Images
Members of Spain's national police force clear people from a polling station where Catalan President Carles Puigdemont had been expected to vote, in Sant Julia de Ramis, near Girona, Spain on October 1. Catalan pro-referendum supporters said they would not comply with a police order to leave the schools they are occupying to use in a vote seeking independence from Spain.
Members of Spain's national police force clear people from a polling station where Catalan President Carles Puigdemont had been expected to vote, in Sant Julia de Ramis, near Girona, Spain on October 1. Catalan pro-referendum supporters said they would not comply with a police order to leave the schools they are occupying to use in a vote seeking independence from Spain.
Francisco Seco/AP
A woman celebrates outside a polling station after casting her vote in Barcelona, on October 01 in a referendum on independence for Catalonia.
A woman celebrates outside a polling station after casting her vote in Barcelona, on October 01 in a referendum on independence for Catalonia.
JOSEP LAGO/AFP/Getty Images
Family members comfort each other after they were unable to vote in the referendum after Spanish police closed their polling station October 1 in Sant Julia de Ramis, Spain.
Family members comfort each other after they were unable to vote in the referendum after Spanish police closed their polling station October 1 in Sant Julia de Ramis, Spain.
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People wait at the doors of the Moises Broggi school to start voting during the Catalan independence referendum in Barcelona, Spain on October 1.
People wait at the doors of the Moises Broggi school to start voting during the Catalan independence referendum in Barcelona, Spain on October 1.
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