An Ikurrina (Basque flag) and a banner that reads, "Basque Prisoners to Basque Country", are reflected in a puddle during the San Fermin festival in downtown Pamplona, Spain, July 12, 2019. REUTERS/Jon Nazca

Jonathan Gonzalez, member of Spain's national surf team, performs in Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Vicente Romero, member of Spain's national surf team, performs an Air Reverse, in Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Garazi Sanchez, member of Spain's national surf team, performs in Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Imanol Yeregui, member of Spain's national surf team, performs in Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Jonathan Gonzalez, member of Spain's national surf team, performs in Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Jonathan Gonzalez, member of Spain's national surf team, performs in Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Garazi Sanchez, member of Spain's national surf team, performs in Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Members of Germany's national surf team watch surfers ride in Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Garazi Sanchez, member of Spain's national surf team, performs in Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Vicente Romero, member of Spain's national surf team, performs an Air Reverse, in Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Vicente Romero, member of Spain's national surf team, performs at Wave Garden, a giant pool that generates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Members of Spain's national surf team (L-R) Jonathan Gonzalez, Imanol Yeregui, Vicente Romero, Garazi Sanchez, Luis Diaz and Ariana Ochoa pose in Wave Garden, a giant pool that creates surfable waves, in the Basque town of Aizarnabazabal, northern Spain, May 25, 2017. REUTERS/Vincent West

Townswomen dressed as Lamia, with their faces painted white and eyes darkened, sing and dance in the Basque coastal town of Mundaka, northern Spain, on Carnival Sunday, February 7, 2016. The Lamia are Basque mythological creatures whose lower extremities are those of a duck or fish depending on their proximity to the sea, and whose favored activity is combing their long blonde hair with a golden comb. REUTERS/Vincent West TPX IMAGES OF THE DAY

Newly elected parliament speaker Patxi Lopez presides during the first session of parliament following a general election in Madrid, Spain, January 13, 2016. REUTERS/J.J. Guillen/Pool

Newly elected parliament speaker Patxi Lopez addresses deputies during the first session of parliament following a general election in Madrid, Spain, January 13, 2016. REUTERS/J.J. Guillen/Pool TPX IMAGES OF THE DAY

Socialist (PSOE) party deputy Patxi Lopez is applauded by deputies after being elected as parliament speaker during first session of parliament following a general election in Madrid, Spain, January 13, 2016. REUTERS/Juan Medina

Newly elected parliament speaker Patxi Lopez addresses deputies during first session of parliament following a general election in Madrid, Spain, January 13, 2016. REUTERS/Juan Medina

Socialist (PSOE) leader Pedro Sanchez (R) embraces newly elected parliament speaker and fellow Socialist member Patxi Lopez during the first parliamentary session following a general election in Madrid, Spain, January 13, 2016. REUTERS/Juan Medina

Socialist (PSOE) party deputy Patxi Lopez (L) speaks to parliament speaker Jesus Posada before Lopez was voted in as new speaker, during first session of parliament following a general election in Madrid, Spain, January 13, 2016. REUTERS/Juan Medina

Socialist (PSOE) party deputy Patxi Lopez (C) is applauded by deputies after being elected as parliament speaker during first session of parliament following a general election in Madrid, Spain, January 13, 2016. REUTERS/Juan Medina

Socialist party (PSOE) leader Pedro Sanchez (L), one of the four leading candidates for Spain's national election, arrives to a meeting alongside Basque Socialist Party general secretary Idoia Mendia, during an election campaign event in Vitoria, Spain, December 11, 2015. REUTERS/Vincent West

Socialist party (PSOE) leader Pedro Sanchez (C), one of the four leading candidates for Spain's national election, applauds during a meeting alongside Basque Socialist Party general secretary Idoia Mendia, during an election campaign event in Vitoria, Spain, December 11, 2015. REUTERS/Vincent West

Spain's King Felipe (L) and Basque premier Inigo Urkullu take part in the opening of the National Congress of Family Businesses at the Palacio Euskaldun in Bilbao, October 26, 2015. REUTERS/Vincent West

A Basque dancer performs in front of (L-R) Basque premier Inigo Urkullu, Spain's King Felipe, Institute of Family Businesses president Javier Moll and State Secretary for the Economy Inigo Fernandez de Mesa during the opening of the National Congress of Family Businesses at the Palacio Euskaldun in Bilbao, October 26, 2015. REUTERS/Vincent West

A Basque dancer throws his beret to Spain's King Felipe (C) alongside (L-R) Basque parliament president Bakartxo Tejeria, Basque premier Inigo Urkullu and Institute of Family Businesses president Javier Moll during the opening of the National Congress of Family Businesses at the Palacio Euskaldun in Bilbao, October 26, 2015. REUTERS/Vincent West

A dancer waves a Basque flag during a meeting of the Partido Nacionalista Vasco (PNV) on the Aberri Eguna (Day of the Basque Nation) in Bilbao, northern Spain, April 5, 2015. REUTERS/Vincent West

A dancer holds up a sword during a meeting of the Partido Nacionalista Vasco (PNV) on the Aberri Eguna (Day of the Basque Nation) in Bilbao, northern Spain, April 5, 2015. REUTERS/Vincent West

Supporters of the Partido Nacionalista Vasco (PNV) applaud a speech by Basque premier Inigo Urkullu during the celebration of the Aberri Eguna (Day of the Basque Nation) in Bilbao, northern Spain, April 5, 2015. REUTERS/Vincent West

Partido Nacionalista Vasco (PNV) president Andoni Ortuzar delivers a speech during the celebration of the Aberri Eguna (Day of the Basque Nation) in Bilbao, northern Spain, April 5, 2015. REUTERS/Vincent West

Basque premier Inigo Urkullu (L) listens to Partido Nacionalista Vasco (PNV) president Andoni Ortuzar delivering a speech during the celebration of the Aberri Eguna (Day of the Basque Nation) in Bilbao, northern Spain, April 5, 2015. REUTERS/Vincent West

Basque premier Inigo Urkullu addresses supporters of the Partido Nacionalista Vasco (PNV) during the celebration of the Aberri Eguna (Day of the Basque Nation) in Bilbao, northern Spain, April 5, 2015. REUTERS/Vincent West

A group of retired men wearing berets enjoy the sunshine in the Spanish Basque fishing town of Bermeo March 6, 2015. According to data from Spain's National Statistics Institute (INE), if current demographic trends continue, Spain will lose a million inhabitants in the next fifteen years and the percentage of the population over 65 will rise from today?s level of 18.2% to 24.9% in 2029 and 38.7% in 2064, the result of falling birth-rates and longer life-expectancy. REUTERS/Vincent West (SPAIN - Tags: SOCIETY BUSINESS)

A flag representing the Basque Country (top L), situated in northern Spain flies in the nationalist Bogside area of Londonderry August 19, 2014. In Belfast, the flags of Israel and the Palestinians are potent symbols of conflict, but they divide Catholics and Protestants rather than Jews and Muslims. In the complex web of alliances that underpins Northern Ireland politics, the star of David has been adopted by pro-British Loyalists, mainly Protestants, many of whom sympathise with Israel's struggle against Islamic militants. Flying the green, black and red of flag of the Palestinian territories, meanwhile, is a sign of support for Catholic Irish Nationalism and their aspiration for a united Ireland against what many see as a British occupation. The flags are among dozens that have been adopted by the working class Catholic and Protestant areas that have for decades been at the focus of sectarian violence in Northern Ireland. Picture taken August 19, 2014.
REUTERS/Cathal McNaughton (NORTHERN IRELAND - Tags: POLITICS CIVIL UNREST)

ATTENTION EDITORS: PICTURE 21 OF 23 FOR WIDER IMAGE PACKAGE 'NORTHERN IREALND - FLYING THE FLAGS'. TO FIND ALL IMAGES SEARCH 'FLAG CATHAL'

(Front row, L-R) Members of the izquierda abertzale (Basque patriotic left) Joseba Permach, Idoia Arbrlaitz, Karmelo Landa, Esther Aguirre and Rufi Etxeberria, part of a group of 20 people who were given prison sentences, take part in a news conference in San Sebastian July 31, 2014. Spain's National Court (Audiencia Nacional) handed out prison sentences to 20 members of the izquierda abertzale and ordered the closure of one hundred Herriko Taberna bars, Basque nationalist bars, that the court said financed armed Basque separatists ETA, according to local media. REUTERS/Vincent West (SPAIN - Tags: POLITICS CIVIL UNREST CRIME LAW)

(Front row, L-R) Members of the izquierda abertzale (Basque patriotic left) Izaskun Barbarias, Joseba Permach, Idoia Arbrlaitz, Karmelo Landa, Esther Aguirre and Rufi Etxeberria, part of a group of 20 people who were given prison sentences, take part in a news conference in San Sebastian July 31, 2014. Spain's National Court (Audiencia Nacional) handed out prison sentences to twenty members of the izquierda abertzale and ordered the closure of one hundred Herriko Taberna bars, Basque nationalist bars, that the court said financed armed Basque separatists ETA, local media reported. REUTERS/Vincent West (SPAIN - Tags: POLITICS CIVIL UNREST CRIME LAW)

A sticker showing an "Eguzkilore" (sunflower), believed to protect Basque homes from bad spirits, is seen on a car at the Santuario de los Santos Antonios in the Urkiola national park June 13, 2014. REUTERS/Vincent West (SPAIN - Tags: SOCIETY)

Basque premier Inigo Urkullu (L) delivers a speech as (front row L-R) Basque Nationalist Party (PNV) president Andoni Ortuzar and Spanish and French Basque candidates, for upcoming European parliament elections, Izaskun Bilbao and Jean Telletxea listens during Aberri Eguna in Bilbao April 20, 2014. The PNV celebrated the Aberri Eguna (Day of the Nation) in Bilbao on Sunday calling for the creation of a Basque nation within the European Union. REUTERS/Vincent West (SPAIN - Tags: POLITICS)

Basque premier Inigo Urkullu delivers a speech at the Aberri Eguna in Bilbao April 20, 2014. The PNV celebrated the Aberri Eguna (Day of the Nation) in Bilbao on Sunday calling for the creation of a Basque nation within the European Union. REUTERS/Vincent West (SPAIN - Tags: POLITICS)

Basque premier Inigo Urkullu (L) talks to (L-R) Basque Nationalist Party (PNV) president Andoni Ortuzar and Spanish and French Basque candidates for upcoming European parliament elections Izaskun Bilbao and Jean Telletxea at the Aberri Eguna April 20, 2014 in Bilbao. The PNV celebrated the Aberri Eguna (Day of the Nation) in Bilbao on Sunday calling for the creation of a Basque nation within the European Union. REUTERS/Vincent West (SPAIN - Tags: POLITICS)

Basque premier Inigo Urkullu (L) holds hands with (L-R) Basque Nationalist Party (PNV) president Andoni Ortuzar and Spanish and French Basque candidates for upcoming European parliament elections Izaskun Bilbao and Jean Telletxea at the Aberri Eguna April 20, 2014 in Bilbao. The PNV celebrated the Aberri Eguna (Day of the Nation) in Bilbao on Sunday calling for the creation of a Basque nation within the European Union. REUTERS/Vincent West (SPAIN - Tags: POLITICS)

Basque premier Inigo Urkullu (L) applauds alongside (L-R) Basque Nationalist Party (PNV) president Andoni Ortuzar and Spanish and French Basque candidates for upcoming European parliament elections, Izaskun Bilbao and Jean Telletxea, during the Aberri Eguna in Bilbao April 20, 2014. The PNV celebrated the Aberri Eguna (Day of the Nation) in Bilbao on Sunday calling for the creation of a Basque nation within the European Union. REUTERS/Vincent West (SPAIN - Tags: POLITICS)

Basque premier Inigo Urkullu (L) delivers a speech as (front row L-R) Basque Nationalist Party (PNV) president Andoni Ortuzar and Spanish and French Basque candidates, for upcoming European parliament elections, Izaskun Bilbao and Jean Telletxea listens during Aberri Eguna in Bilbao April 20, 2014. The PNV celebrated the Aberri Eguna (Day of the Nation) in Bilbao on Sunday calling for the creation of a Basque nation within the European Union. REUTERS/Vincent West (SPAIN - Tags: POLITICS)

Basque premier Inigo Urkullu (2nd R) listens to a speech by Basque Nationalist Party (PNV) president Andoni Ortuzar at the Aberri Eguna April 20, 2014 in Bilbao. The PNV celebrated the Aberri Eguna (Day of the Nation) in Bilbao on Sunday calling for the creation of a Basque nation within the European Union. REUTERS/Vincent West (SPAIN - Tags: POLITICS)

People stand in line to buy tickets for the film "8 Apellidos Vascos" (8 Basque Surnames) at a cinema in central Madrid March 30, 2014. Spanish filmgoers are queuing up for a surprise hit comedy about Basques and separatist guerrillas - complete with jokes about car-bombings - in a film that would have been unthinkable in Spain before now. "8 Apellidos Vascos", has viewers in stitches over the cultural divide between a slick-haired young man from southern Spain and his Basque girlfriend. The taboo-breaking film racked up 16 million euros ($22 million) at the box office in its first three weekends - a boon for the stricken national film industry where it is rare for a Spanish movie to gross more than 10 million euros. Picture taken March 30, 2014. REUTERS/Andrea Comas (SPAIN - Tags: ENTERTAINMENT POLITICS SOCIETY)

People stand in line to buy tickets for the film "8 Apellidos Vascos" (8 Basque Surnames) at a cinema in central Madrid March 30, 2014. Spanish filmgoers are queuing up for a surprise hit comedy about Basques and separatist guerrillas - complete with jokes about car-bombings - in a film that would have been unthinkable in Spain before now. "8 Apellidos Vascos", has viewers in stitches over the cultural divide between a slick-haired young man from southern Spain and his Basque girlfriend. The taboo-breaking film racked up 16 million euros ($22 million) at the box office in its first three weekends - a boon for the stricken national film industry where it is rare for a Spanish movie to gross more than 10 million euros. Picture taken March 30, 2014. REUTERS/Andrea Comas (SPAIN - Tags: ENTERTAINMENT POLITICS SOCIETY)

Actors take part in street theatre organized by the Coordinator of NGOs of the Basque Country in Bilbao December 19, 2013. The organization, an umbrella group for 84 Basque NGOs, performed Quien es Quien (Who's Who), an improvised theatrical piece, dressed as bankers, the wealthy and military personnel, handing out fake money to motorists and passers-by. The action was designed to draw attention to what the coordinator claims are the causes of poverty and inequality in the world. REUTERS/Vincent West (SPAIN - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)

A man helps carry a banner displaying a national flag as they take part in a protest against a European court ruling which released an ETA member from jail and opened the way for dozens of other convicted Basque separatists to walk free, in Madrid December 6, 2013. REUTERS/Javier Barbancho (SPAIN - Tags: POLITICS CIVIL UNREST)

A woman helps carry a banner displaying a national flag as they take part in a protest against a European court ruling which released an ETA member from jail and opened the way for dozens of other convicted Basque separatists to walk free, in Madrid December 6, 2013. REUTERS/Javier Barbancho (SPAIN - Tags: POLITICS CIVIL UNREST)

A couple walk past right-wing party banners after a protest against a European court ruling which released an ETA member from jail and opened the way for dozens of other convicted Basque separatists to walk free, in central Madrid October 27, 2013. Victims of Basque separatist violence - which killed more than 800 people over four decades - rallied in Madrid, alongside members of the ruling centre-right People's Party (PP). Since Monday's ruling, Spain's High Court has received requests to review the imprisonment of 51 members of ETA, which stands for Basque Homeland and Freedom in the Basque language. The group announced the end of their armed activity two years ago. The banners, signed by right-wing party Democria Nacional (National Democracy), read: " ETA murderers, government and European Union accomplices. With us there will be true justice, life sentence or death penalty for terrorists". REUTERS/Juan Medina (SPAIN - Tags: CIVIL UNREST POLITICS CRIME LAW)

A man takes a picture of right-wing party banners after a protest against a European court ruling which released an ETA member from jail and opened the way for dozens of other convicted Basque separatists to walk free, in central Madrid October 27, 2013. Victims of Basque separatist violence - which killed more than 800 people over four decades - rallied in Madrid, alongside members of the ruling centre-right People's Party (PP). Since Monday's ruling, Spain's High Court has received requests to review the imprisonment of 51 members of ETA, which stands for Basque Homeland and Freedom in the Basque language. The group announced the end of their armed activity two years ago. The banners, signed by right-wing party Democria Nacional (National Democracy), read: " ETA murderers, government and European Union accomplices. With us there will be true justice, life sentence or death penalty for terrorists". REUTERS/Juan Medina (SPAIN - Tags: CIVIL UNREST POLITICS CRIME LAW)

People give a fascist salute as they listen to the Spanish national anthem during a protest against a European court ruling which released an ETA member from jail and opened the way for dozens of other convicted Basque separatists to walk free, in central Madrid October 27, 2013. Victims of Basque separatist violence - which killed more than 800 people over four decades - rallied in Madrid, alongside members of the ruling centre-right People's Party (PP). Since Monday's ruling, Spain's High Court has received requests to review the imprisonment of 51 members of ETA, which stands for Basque Homeland and Freedom in the Basque language. The group announced the end of their armed activity two years ago. REUTERS/Juan Medina (SPAIN - Tags: CIVIL UNREST POLITICS CRIME LAW)

People give a fascist salute as they listen to the Spanish national anthem during a protest against a European court ruling which released an ETA member from jail and opened the way for dozens of other convicted Basque separatists to walk free, in central Madrid October 27, 2013. Victims of Basque separatist violence - which killed more than 800 people over four decades - rallied in Madrid, alongside members of the ruling centre-right People's Party (PP). Since Monday's ruling, Spain's High Court has received requests to review the imprisonment of 51 members of ETA, which stands for Basque Homeland and Freedom in the Basque language. The group announced the end of their armed activity two years ago. REUTERS/Juan Medina (SPAIN - Tags: CIVIL UNREST POLITICS CRIME LAW)

People give a fascist salute as they listen to the Spanish national anthem during a protest against a European court ruling which released an ETA member from jail and opened the way for dozens of other convicted Basque separatists to walk free, in central Madrid October 27, 2013. Victims of Basque separatist violence - which killed more than 800 people over four decades - rallied in Madrid, alongside members of the ruling centre-right People's Party (PP). Since Monday's ruling, Spain's High Court has received requests to review the imprisonment of 51 members of ETA, which stands for Basque Homeland and Freedom in the Basque language. The group announced the end of their armed activity two years ago. REUTERS/Juan Medina (SPAIN - Tags: CIVIL UNREST POLITICS CRIME LAW)

People give a fascist salute as they listen to the Spanish national anthem during a protest against a European court ruling which released an ETA member from jail and opened the way for dozens of other convicted Basque separatists to walk free, in central Madrid October 27, 2013. Victims of Basque separatist violence - which killed more than 800 people over four decades - rallied in Madrid, alongside members of the ruling centre-right People's Party (PP). Since Monday's ruling, Spain's High Court has received requests to review the imprisonment of 51 members of ETA, which stands for Basque Homeland and Freedom in the Basque language. The group announced the end of their armed activity two years ago. REUTERS/Juan Medina (SPAIN - Tags: CIVIL UNREST POLITICS CRIME LAW)

A farmhouse displays a Basque flag with a black ribbon on the 76th anniversary of the aerial bombing of the Basque town of Guernica April 26, 2013, by planes from Germany's Condor Legion, in aid of the nationalist military rebellion lead by General Francisco Franco. REUTERS/Vincent West (SPAIN - Tags: POLITICS CIVIL UNREST ANNIVERSARY CONFLICT)

A supporter embraces the President of the Partido Nacionalista Vasco (Basque Nationalist Party) Andoni Ortuzar (L) during the Aberri Eguna (Day of the Basque Nation) at the Plaza Nueva in Bilbao March 31, 2013. REUTERS/Vincent West (SPAIN - Tags: POLITICS)

A supporter talks to the President of the Basque regional government Inigo Urkullu during the Aberri Eguna (Day of the Basque Nation) at the Plaza Nueva in Bilbao March 31, 2013. REUTERS/Vincent West (SPAIN - Tags: POLITICS)

President of the Partido Nacionalista Vasco (Basque Nationalist Party) Andoni Ortuzar (R) and Basque regional President Inigo Urklullu applaud during the Aberri Eguna (Day of the Basque Nation) at the Plaza Nueva in Bilbao March 31, 2013. REUTERS/Vincent West (SPAIN - Tags: POLITICS)

President of the Partido Nacionalista Vasco (Basque Nationalist Party) Andoni Ortuzar addresses supporters at the Aberri Eguna (Day of the Basque Nation) at the Plaza Nueva in Bilbao March 31, 2013. REUTERS/Vincent West (SPAIN - Tags: POLITICS)