A woman carries a poster reading "For a deserved agreement" as workers from five Basque companies, including oil refinery Petronor, protest layoffs, claiming that the businesses are using COVID-19 as an excuse to reduce staffing costs, in Bilbao, Spain June 18, 2021. REUTERS/Vincent West

Workers from five Basque companies, including oil refinery Petronor, protest layoffs, claiming that the businesses are using COVID-19 as an excuse to reduce staffing costs, in Bilbao, Spain June 18, 2021. REUTERS/Vincent West

A demonstrator holds a flare as workers from five Basque companies, including oil refinery Petronor, protest layoffs, claiming that the businesses are using COVID-19 as an excuse to reduce staffing costs, in Bilbao, Spain June 18, 2021. REUTERS/Vincent West

A demonstrator holds a flare as workers from five Basque companies protest layoffs, claiming that the businesses are using COVID-19 as an excuse to reduce staffing costs, in Bilbao, Spain June 18, 2021. REUTERS/Vincent West

A demonstrator holds a flare as workers from five Basque companies, including oil refinery Petronor, protest layoffs, claiming that the businesses are using COVID-19 as an excuse to reduce staffing costs, in Bilbao, Spain June 18, 2021. REUTERS/Vincent West

Demonstrators carry a banner reading "Tubacex. No to downsizing plan" as workers of five companies, including oil refinery Petronor, protest layoffs, claiming that the businesses are using COVID-19 as an excuse to reduce staffing costs, in Bilbao, Spain June 18, 2021. REUTERS/Vincent West

Survivors of the bombing of Guernica Cruzita Etxabe, 92, and Paco Garcia, 93, talk to Basque premier Inigo Urkullu and mayor Jose Maria Gorrono on the 84th anniversary of the attack on the Basque town during the Spanish Civil War, in Guernica, Spain, April 26, 2021. REUTERS/Vincent West

Residents observe a chocolate reproduction of Picasso's Guernica on the 84th anniversary of the attack on the Basque town during the Spanish Civil War, in Guernica, Spain, April 26, 2021. REUTERS/Vincent West

Residents observe a chocolate reproduction of Picasso's Guernica on the 84th anniversary of the attack on the Basque town during the Spanish Civil War, in Guernica, Spain, April 26, 2021. REUTERS/Vincent West

A farmhouse hangs a Basque flag on the 84th anniversary of the attack on the Basque town of Guernica during the Spanish Civil War, in Guernica, Spain, April 26, 2021. REUTERS/Vincent West

Residents observe a chocolate reproduction of Picasso's Guernica on the 84th anniversary of the attack on the Basque town during the Spanish Civil War, in Guernica, Spain, April 26, 2021. REUTERS/Vincent West

Survivors of the bombing of Guernica, Cruzita Etxabe, 92, and Paco Garcia, 93, talk on the 85th anniversary of the attack on the Basque town by the Nazi German unit Condor Legion during the Spanish Civil War, in Guernica, Spain, April 26, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Cooks from Euskal Gozogileak (Basque confectioners) create a full-sized reproduction of Picasso's Guernica made with chocolate, ahead of the 85th anniversary of the bombing of the town, in Lezo, Spain, April 20, 2021. Picture taken April 20, 2021. REUTERS/Vincent West

Athletic Bilbao and Real Sociedad fans talk as a person holds up his phone, screen reading "At last the Basque flag, each with his own", ahead of their Copa Del Rey (King's Cup) final in Bilbao, Spain, April 3, 2021. REUTERS/Vincent West

A nurse conducts a PCR (polymerase chain reaction) swab test on a resident of the Basque town of Elorrio during mass testing, following an upsurge of coronavirus disease (COVID-19) cases in the municipality, in Elorrio, Spain March 23, 2021. REUTERS/Vincent West

Nurses conduct PCR (polymerase chain reaction) swab tests on residents of the Basque town of Elorrio during mass testing, following an upsurge of coronavirus disease (COVID-19) cases in the municipality, in Elorrio, Spain March 23, 2021. REUTERS/Vincent West

A nurse conducts a PCR (polymerase chain reaction) swab test on a resident of the Basque town of Elorrio during mass testing, following an upsurge of coronavirus disease (COVID-19) cases in the municipality, in Elorrio, Spain March 23, 2021. REUTERS/Vincent West

A nurse conducts a PCR (polymerase chain reaction) swab test on a resident of the Basque town of Elorrio during mass testing, following an upsurge of coronavirus disease (COVID-19) cases in the municipality, in Elorrio, Spain March 23, 2021. REUTERS/Vincent West

A nurse conducts a PCR (polymerase chain reaction) swab test on a resident of the Basque town of Elorrio during mass testing, following an upsurge of coronavirus disease (COVID-19) cases in the municipality, in Elorrio, Spain March 23, 2021. REUTERS/Vincent West

A nurse conducts a PCR (polymerase chain reaction) swab test on a resident of the Basque town of Elorrio during mass testing, following an upsurge of coronavirus disease (COVID-19) cases in the municipality, in Elorrio, Spain March 23, 2021. REUTERS/Vincent West

Residents wait for PCR (polymerase chain reaction) tests in the Basque town of Elorrio during mass testing, following an upsurge of coronavirus disease (COVID-19) cases in the municipality, in Elorrio, Spain March 23, 2021. REUTERS/Vincent West

A nurse conducts a PCR (polymerase chain reaction) swab test on a resident of the Basque town of Elorrio during mass testing, following an upsurge of coronavirus disease (COVID-19) cases in the municipality, in Elorrio, Spain March 23, 2021. REUTERS/Vincent West

A nurse conducts a PCR (polymerase chain reaction) swab test on a resident of the Basque town of Elorrio during mass testing, following an upsurge of coronavirus disease (COVID-19) cases in the municipality, in Elorrio, Spain March 23, 2021. REUTERS/Vincent West

Barman Guillermo Casado wears a protective mask as he serves beer after bars reopened in Spain's Basque Country, amid the coronavirus disease (COVID-19) outbreak, in Bilbao, Spain, February 19, 2021. REUTERS/Vincent West

People wearing protective masks walk past bar customers after bars reopened in Spain's Basque Country, amid the coronavirus disease (COVID-19) outbreak, in Bilbao, Spain, February 19, 2021. REUTERS/Vincent West

People wearing protective masks walk past bar customers after bars reopened in Spain's Basque Country, amid the coronavirus disease (COVID-19) outbreak, in Bilbao, Spain, February 19, 2021. REUTERS/Vincent West

Barman Guillermo Casado wears a protective mask as he serves beer after bars reopened in Spain's Basque Country, amid the coronavirus disease (COVID-19) outbreak, in Bilbao, Spain, February 19, 2021. REUTERS/Vincent West

People wearing protective masks walk past bar customers after bars reopened in Spain's Basque Country, amid the coronavirus disease (COVID-19) outbreak, in Bilbao, Spain, February 19, 2021. REUTERS/Vincent West

Nuns wearing protective masks walk through the Basque town of Guernica, Spain, during the coronavirus disease (COVID-19) outbreak, December 17, 2020. REUTERS/Vincent West

A customer is served a takeaway coffee at a bar, after the Basque regional government ordered the closure of bars and restaurants, while allowing takeaway food and drink, during the coronavirus disease (COVID-19) outbreak, in Guernica, Spain November 20, 2020. REUTERS/Vincent West

People carry a banner reading "A safe and negotiated return to education", during a one day strike called by trade unions to protest the Basque regional government's response to the coronavirus disease (COVID-19) crisis in education, Bilbao, Spain, September 15, 2020. REUTERS/Vincent West

People carry a banner reading "A safe and negotiated return to education", during a one day strike called by trade unions to protest the Basque regional government's response to the coronavirus disease (COVID-19) crisis in education, Bilbao, Spain, September 15, 2020. REUTERS/Vincent West

Teachers and students demonstrate during a one day strike called by trade unions to protest the Basque regional government's response to the coronavirus disease (COVID-19) crisis in education, Bilbao, Spain, September 15, 2020. REUTERS/Vincent West

A student carries a banner reading "A safe and negotiated return to education", during a one day strike called by trade unions to protest the Basque regional government's response to the coronavirus disease (COVID-19) crisis in education, Bilbao, Spain, September 15, 2020. REUTERS/Vincent West

A poster at a primary school announces a one day strike called by trade unions to protest the Basque regional government's response to the coronavirus disease (COVID-19) crisis in education, Bilbao, Spain, September 15, 2020. REUTERS/Vincent West

Students demonstrate during a one day strike called by trade unions to protest the Basque regional government's response to the coronavirus disease (COVID-19) crisis in education, Bilbao, Spain, September 15, 2020. REUTERS/Vincent West

A couple walks past Zaldibar primary school after authorities in Spain's Basque Country region said on Thursday they had shut down the school after several teachers tested positive for the coronavirus disease (COVID-19), in Zaldibar, Spain, September 10, 2020. REUTERS/Vincent West

A boy plays with a ball at Zaldibar primary school after authorities in Spain's Basque Country region said on Thursday they had shut down the school after several teachers tested positive for the coronavirus disease (COVID-19), in Zaldibar, Spain, September 10, 2020. REUTERS/Vincent West

A boy kicks a ball at Zaldibar primary school after authorities in Spain's Basque Country region said on Thursday they had shut down the school after several teachers tested positive for the coronavirus disease (COVID-19), Zaldibar, Spain, September 10, 2020. REUTERS/Vincent West

A notice from the Basque regional government is pinned to a board outside Zaldibar primary school after authorities in Spain's Basque Country region said on Thursday they had shut down the school after several teachers tested positive for the coronavirus disease (COVID-19), in Zaldibar, Spain, September 10, 2020. REUTERS/Vincent West

A view of Zaldibar primary school after authorities in Spain's Basque Country region said on Thursday they had shut down the school after several teachers tested positive for the coronavirus disease (COVID-19), in Zaldibar, Spain, September 10, 2020. REUTERS/Vincent West

A notice from the Basque regional government is pinned to a board outside Zaldibar primary school after authorities in Spain's Basque Country region said on Thursday they had shut down the school after several teachers tested positive for the coronavirus disease (COVID-19), in Zaldibar, Spain, September 10, 2020. REUTERS/Vincent West

A sign for Zaldibar primary school is seen through bars after authorities in Spain's Basque Country region said on Thursday they had shut down the school after several teachers tested positive for the coronavirus disease (COVID-19), Zaldibar, Spain, September 10, 2020. REUTERS/Vincent West

Ambuiberica medical staff members lift a suspected coronavirus disease (COVID-19) patient into an ambulance, in the Basque port town of Bermeo, Spain August 18, 2020. Picture taken August 18, 2020. REUTERS/Vincent West

A medical stretcher for a suspected coronavirus disease (COVID-19) patient is seen in a hallway in the Basque port town of Bermeo, Spain August 18, 2020. Picture taken August 18, 2020. REUTERS/Vincent West

A medical team prepare to administer PCR tests to residents of the Basque town of Azpeitia, Spain, amid a localised outbreak of the coronavirus disease (COVID-19), August 17, 2020. REUTERS/Vincent West

A medical team prepare to administer PCR tests to residents of the Basque town of Azpeitia, Spain, amid a localised outbreak of the coronavirus disease (COVID-19), August 17, 2020. REUTERS/Vincent West