A display showing representations of the Empire Windrush ship is seen on the gates of the Black Cultural Archives building to commemorate Windrush Day, a celebration of the contribution of the Windrush generation of Caribbean population who arrived in Britain to help rebuild the country after the Second World War, in Windrush Square, London, Britain June 22, 2020. REUTERS/Toby Melville

The U.S. Navy hospital ship USNS Comfort heads past lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating patients during the outbreak of coronavirus disease (COVID-19) in New York City New York, U.S., April 30, 2020. REUTERS/Mike Segar

The U.S. Navy hospital ship USNS Comfort heads past lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating patients during the outbreak of coronavirus disease (COVID-19) in New York City New York, U.S., April 30, 2020. REUTERS/Brendan McDermid

The U.S. Navy hospital ship USNS Comfort heads past lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating patients during the outbreak of coronavirus disease (COVID-19) in New York City New York, U.S., April 30, 2020. REUTERS/Brendan McDermid

The U.S. Navy hospital ship USNS Comfort heads past lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating patients during the outbreak of coronavirus disease (COVID-19) in New York City New York, U.S., April 30, 2020. REUTERS/Brendan McDermid

Spectators on the New Jersey shoreline take pictures as the U.S. Navy hospital ship USNS Comfort departs Manhattan and passes lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating New York City area patients during the outbreak of coronavirus disease (COVID-19) as seen from Jersey City, New Jersey, U.S., April 30, 2020. REUTERS/Brendan McDermid

The U.S. Navy hospital ship USNS Comfort heads past lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating patients during the outbreak of coronavirus disease (COVID-19) in New York City New York, U.S., April 30, 2020. REUTERS/Mike Segar

The U.S. Navy hospital ship USNS Comfort heads past lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating patients during the outbreak of coronavirus disease (COVID-19) in New York City New York, U.S., April 30, 2020. REUTERS/Brendan McDermid

The U.S. Navy hospital ship USNS Comfort heads past lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating patients during the outbreak of coronavirus disease (COVID-19) in New York City New York, U.S., April 30, 2020. REUTERS/Mike Segar

The U.S. Navy hospital ship USNS Comfort heads past lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating patients during the outbreak of coronavirus disease (COVID-19) in New York City New York, U.S., April 30, 2020. REUTERS/Mike Segar

The U.S. Navy hospital ship USNS Comfort heads past lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating patients during the outbreak of coronavirus disease (COVID-19) in New York City, New York, U.S., April 30, 2020. REUTERS/Mike Segar TPX IMAGES OF THE DAY

The U.S. Navy hospital ship USNS Comfort heads past lower Manhattan and the World Trade Center building under heavy fog as it leaves to return to its home port of Norfolk, Virginia, after treating patients during the outbreak of coronavirus disease (COVID-19) in New York City New York, U.S., April 30, 2020. REUTERS/Mike Segar

The Queen Mary ship is shown between buildings during the outbreak of the coronavirus disease (COVID-19) in Long Beach, California, U.S., April 23, 2020. REUTERS/Mike Blake

Workers build a new Mayflower ship that is set to sail in September to mark the 400th anniversary of the original Mayflower voyage in 1620 at the Gdansk shipyard, Poland March 12, 2020. The vessel will transport it to the British port city of Plymouth where it will be equipped with an 'AI Captain' to self-navigate across the Atlantic to Plymouth, Massachusetts with no humans on board. Picture taken March 12, 2020. REUTERS/Malgorzata Wojtunik

Ships are docked along the pier of the Kimek shipyard in Kirkenes, Norway, October 24, 2019. "I don't like it that they build up the military on both sides of the border. We don't want rising tensions," said Eirik Wikan, co-owner of the Kimek shipyard, which gets two-thirds of its revenues from repairing Russian vessels. "Here in the north, we work together to reduce tensions ...We are trying not to be part of them." REUTERS/Maxim Shemetov SEARCH "NORWAY-RUSSIA BORDER" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A commenorative building that is known locally as 'The Tunnel' is seen near the 'Point of No Return' from where slaves were shipped from the historic slave port at Badagry, Nigeria. June 21, 2019. Picture taken June 21, 2019. REUTERS/Afolabi Sotunde

Emmanuel Mouti Dongo from Cameroon visits the “Maison Des Esclaves” slave house on Goree Island off the coast of Dakar, Senegal, July 7, 2019. Goree island, was one of the trans-Atlantic slave-trade gathering points from where slaves were shipped west in the 1700s and 1800 and today is UNESCO world heritage site. "The Slave House of the Goree Island is an historic site, a place of remembrance,, is a very important journey that must be made by all Africans, to see the atrocity that humanity has lived for centuries,  emotionally, I was able to measure the extent and severity of the wounds suffered our ancestors African black undergone by by human beings like them. I discovered in my country Cameroon, in the lcoastal region, our ancestors were slaves owners and traders, it is important to continue to talk about the slavery as long as we are on earth that the generations to come, and ourselves can know what we experienced as an injury and what the human being could endure, not to accuse but to heal and reconcile the peoples in the hope of building a world more harmonious and more respectful of human rights and solidarity with each other", Sammuel said. Picture taken July 7, 2019. REUTERS/Zohra Bensemra

A man looks out from a sea viewing commenorative building that is known locally as 'The Tunnel' that is sited near the 'Point of No Return' where slaves were shipped from the slave port at Badagry, Nigeria June 21, 2019. The 400-year anniversary of the first slave boat to arrive in America from Africa has caused a rush of interest in heritage tourism in West Africa, as descendants of slaves from America, the Caribbean and Europe visit ancient sites to delve into a dark and often hidden past. Picture taken June 21, 2019. REUTERS/Afolabi Sotunde

A disused building is seen on the beach where thousands of slaves were shipped away from the historic slave port of Ouidah, Benin, July 17, 2019. The 400-year anniversary of the first slave boat to arrive in America from Africa has caused a rush of interest in heritage tourism in West Africa, as descendants of slaves from America, the Caribbean and Europe visit ancient sites to delve into a dark and often hidden past. Picture taken July 17, 2018. REUTERS/Afolabi Sotunde

Emmanuel Mouti Dongo from Cameroon visits the 'Maison Des Esclaves' slaves house, a gathering point from where slaves were shipped west in the 1700s and 1800s, at Goree Island off the coast of Dakar, Senegal July 7, 2019. Emmanuel said: "The Slave House of the Goree Island is an historic site, a place of remembrance and is a very important journey that must be made by all Africans. Not to accuse but to heal and reconcile people in the hope of building a world more harmonious and more respectful of human rights and solidarity with each other." The 400-year anniversary of the first slave boat to arrive in America from Africa has caused a rush of interest in heritage tourism in West Africa, as ancestors go back to ancient sites to delve into a dark and often hidden past. Picture taken July 7, 2019. REUTERS/Zohra Bensemra

Ukrainian ombudswoman for human rights Lyudmila Denisova speaks with journalists before the arrival of detained crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, outside a court building in Moscow, Russia July 17, 2019. REUTERS/Shamil Zhumatov

Electricity lights up buildings and shipping berthed in the port of Cape Town, South Africa, June 18, 2019. REUTERS/Mike Hutchings

Lawyers Gabor Elo and Balazs M. Toth exit the court building, after the arrest hearing of the Viking Sigyn ship captain, in Budapest, Hungary, June 1, 2019. REUTERS/Antonio Bronic

Lawyers Gabor Elo and Balazs M. Toth talk to the media as they exit the court building, after the arrest hearing of the Viking Sigyn ship captain, in Budapest, Hungary, June 1, 2019. REUTERS/Antonio Bronic

Lawyers Gabor Elo and Balazs M. Toth exit the court building, after the arrest hearing of the Viking Sigyn ship captain, in Budapest, Hungary, June 1, 2019. REUTERS/Antonio Bronic

Lawyers Gabor Elo and Balazs M. Toth arrive in front of the court building, where the arrest hearing of the Viking Sigyn ship captain will take place in Budapest, Hungary, June 1, 2019. REUTERS/Bernadett Szabo

Lawyers Gabor Elo and Balazs M. Toth arrive in front of the court building, where the arrest hearing of the Viking Sigyn ship captain will take place in Budapest, Hungary, June 1, 2019. REUTERS/Bernadett Szabo

Lawyers Gabor Elo and Balazs M. Toth arrive in front of the court building, where the arrest hearing of the Viking Sigyn ship captain will take place in Budapest, Hungary, June 1, 2019. REUTERS/Bernadett Szabo

Lawyer Gabor Elo speaks to media members in front of the court building, where the arrest hearing of the Viking Sigyn ship captain takes place in Budapest, Hungary, June 1, 2019. REUTERS/Antonio Bronic

Lawyer Gabor Elo speaks to media members in front of the court building, where the arrest hearing of the Viking Sigyn ship captain takes place in Budapest, Hungary, June 1, 2019. REUTERS/Antonio Bronic

Lawyers Gabor Elo and Balazs M. Toth speak to the media members in front of the court building, where the arrest hearing of the Viking Sigyn ship captain takes place in Budapest, Hungary, June 1, 2019. REUTERS/Antonio Bronic

Media members wait in front of the court building, where the arrest hearing of the Viking Sigyn ship captain takes place in Budapest, Hungary, June 1, 2019. REUTERS/Bernadett Szabo

Media members wait in front of the court building, where the arrest hearing of the Viking Sigyn ship captain takes place in Budapest, Hungary, June 1, 2019. Reuters/Bernadett Szabo

Crew member of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, looks on during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva TPX IMAGES OF THE DAY

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew member of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, looks on during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, look on during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, look on during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, react during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, look on during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Law enforcement officers guard detained crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, during the hearing of an appeal on extended detention, inside a court building in Moscow, Russia February 13, 2019. REUTERS/Tatyana Makeyeva

Law enforcement officers escort detained crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, inside a court building in Moscow, Russia January 15, 2019. REUTERS/Maxim Shemetov

Detained crew members of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, are escorted inside a court building in Moscow, Russia January 15, 2019. REUTERS/Maxim Shemetov

A detained crew member of one of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, is escorted inside a court building in Moscow, Russia January 15, 2019. REUTERS/Maxim Shemetov

A detained crew member of one of Ukrainian naval ships, which were seized by Russia's FSB security service in November 2018, is escorted inside a court building in Moscow, Russia January 15, 2019. REUTERS/Maxim Shemetov