French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron lays a wreath of flowers as he attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron and French Senate President Gerard Larcher attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron, French Senate President Gerard Larcher and former French Prime Minister Jean-Marc Ayrault attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron and French Senate President Gerard Larcher attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron, French Senate President Gerard Larcher and former French Prime Minister Jean-Marc Ayrault attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron arrives to attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

French President Emmanuel Macron arrives to attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens in Paris, France, May 10, 2022. REUTERS/Christian Hartmann/Pool 

Traditional African Kente Cloth covers a newly installed plaque, explaining the links to the street name and the slave trade is seen outside the World Museum in Liverpool, Britain, April 5, 2022. REUTERS/Phil Noble 

A newly unveiled plaque, explaining the links to the street name and the slave trade is seen outside the World Museum in Liverpool, Britain, April 5, 2022. REUTERS/Phil Noble 

A newly unveiled plaque, explaining the links to the street name and the slave trade is seen outside the World Museum in Liverpool, Britain, April 5, 2022. REUTERS/Phil Noble 

French President Emmanuel Macron lays a wreath as he attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens, in Paris, France May 10, 2021. Ian Langsdon/Pool via REUTERS 

French President Emmanuel Macron lays a wreath as he attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens, in Paris, France May 10, 2021. Ian Langsdon/Pool via REUTERS 

French President Emmanuel Macron speaks with the President of Parliament Richard Ferrand as they attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens, in Paris, France May 10, 2021. Ian Langsdon/Pool via REUTERS 

French President Emmanuel Macron, flanked by President of the Senate Gerard Larcher, former French Prime Minister Jean-Marc Ayrault, President of Parliament Richard Ferrand, and cabinet ministers, arrives to attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens, in Paris, France May 10, 2021. Ian Langsdon/Pool via REUTERS 

French President Emmanuel Macron, flanked by President of the Senate Gerard Larcher, French Minister of Interior Gerald Darmanin, former French Prime Minister Jean-Marc Ayrault, and the President of Parliament Richard Ferrand, arrives to attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens, in Paris, France May 10, 2021. Ian Langsdon/Pool via REUTERS 

French President Emmanuel Macron, flanked by French Education, Youth and Sports Minister Jean-Michel Blanquer, the President of the Senate Gerard Larcher, former French President Francois Hollande, former French Prime Minister Jean-Marc Ayrault, and the President of Parliament Richard Ferrand, arrives to attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens, in Paris, France May 10, 2021. Ian Langsdon/Pool via REUTERS 

French President Emmanuel Macron, flanked by French Education, Youth and Sports Minister Jean-Michel Blanquer, the President of the Senate Gerard Larcher, former French Prime Minister Jean-Marc Ayrault, and the President of Parliament Richard Ferrand, arriveS to attend a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens, in Paris, France May 10, 2021. Ian Langsdon/Pool via REUTERS 

Mayor of Paris Anne Hidalgo attends a ceremony to mark the abolition of slavery and to pay tribute to the victims of slave trade, at the Luxembourg Gardens, in Paris, France May 10, 2021. Ian Langsdon/Pool via REUTERS 

Felipe Luther, 37, a scholarship student at Pontifical Catholic University of Rio (PUC-Rio) who also works as a street-sweeper, buries offerings during an Umbanda ceremony in a terreiro in Campo Grande, Rio de Janeiro state, Brazil, February 9, 2021. Twice a week, Luther visits a local "terreiro" to practice Umbanda, a religion with origins in West African spiritual traditions. Dressed in all-white clothing with beaded necklaces hanging over his chest, Luther participates in dances, songs and rituals with fellow believers. "It connects me with my ancestry," he said. Popularized in Rio in the 1930s, Umbanda, like fellow Afro-Brazilian religion Candomble, has roots in the transatlantic slave trade, which brought as many as 5 million enslaved people from Africa to Brazil ? 10 times the number brought to the United States. Those who sought to practice their rituals free from the harassment by Europeans would blend their native traditions with elements of Catholicism, creating syncretic religions now practiced by over half a million people in the country. REUTERS/Pilar Olivares SEARCH "BLM OLIVARES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Felipe Luther, 37, a scholarship student at Pontifical Catholic University of Rio (PUC-Rio) who also works as a street-sweeper, takes part in an Umbanda ceremony in a terreiro in Campo Grande, Rio de Janeiro state, Brazil, February 9, 2021. Twice a week, Luther visits a local "terreiro" to practice Umbanda, a religion with origins in West African spiritual traditions. Dressed in all-white clothing with beaded necklaces hanging over his chest, Luther participates in dances, songs and rituals with fellow believers. "It connects me with my ancestry," he said. Popularized in Rio in the 1930s, Umbanda, like fellow Afro-Brazilian religion Candomble, has roots in the transatlantic slave trade, which brought as many as 5 million enslaved people from Africa to Brazil ? 10 times the number brought to the United States. Those who sought to practice their rituals free from the harassment by Europeans would blend their native traditions with elements of Catholicism, creating syncretic religions now practiced by over half a million people in the country. REUTERS/Pilar Olivares SEARCH "BLM OLIVARES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Felipe Luther, 37, a scholarship student at Pontifical Catholic University of Rio (PUC-Rio) who also works as a street-sweeper, takes part in an Umbanda ceremony in a terreiro in Campo Grande, Rio de Janeiro state, Brazil, February 9, 2021. Twice a week, Luther visits a local "terreiro" to practice Umbanda, a religion with origins in West African spiritual traditions. Dressed in all-white clothing with beaded necklaces hanging over his chest, Luther participates in dances, songs and rituals with fellow believers. "It connects me with my ancestry," he said. Popularized in Rio in the 1930s, Umbanda, like fellow Afro-Brazilian religion Candomble, has roots in the transatlantic slave trade, which brought as many as 5 million enslaved people from Africa to Brazil ? 10 times the number brought to the United States. Those who sought to practice their rituals free from the harassment by Europeans would blend their native traditions with elements of Catholicism, creating syncretic religions now practiced by over half a million people in the country. REUTERS/Pilar Olivares SEARCH "BLM OLIVARES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES 

Prefect of the Paris Police Didier Lallement attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

Prefect of the Paris Police Didier Lallement attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

Prefect of the Paris Police Didier Lallement attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

Prefect of the Paris Police Didier Lallement attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

Prefect of the Paris Police Didier Lallement attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe, Senate President Gerard Larcher, Mayor of Paris Anne Hidalgo and French National Assembly President Richard Ferrand attend a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe and Senate President Gerard Larcher attend a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe and Senate President Gerard Larcher attend a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

Mayor of Paris Anne Hidalgo attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French National Assembly President Richard Ferrand attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French National Assembly President Richard Ferrand attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

French Prime Minister Edouard Philippe attends a ceremony at the Luxembourg Gardens to mark the anniversary of the abolition of slavery and to pay tribute to the victims of the slave trade, in Paris, France May 10, 2020. Ian Langsdon/Pool via REUTERS 

Fishermen are pictured in front of 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 1800s, and today is a UNESCO world heritage site. Picture taken July 7, 2019. REUTERS/Zohra Bensemra 

A boy is pictured at Goree Island off the coast of Dakar, Senegal, July 8, 2019. Goree Island was one of the trans-Atlantic slave-trade gathering points from where slaves were shipped west in the 1700s and 1800s, and today is a UNESCO world heritage site. Picture taken July 8, 2019. REUTERS/Zohra Bensemra 

A general view of Goree Island is seen off the coast of Dakar, Senegal, July 8, 2019. Goree island was one of the trans-Atlantic slave-trade gathering points from where slaves were shipped west in the 1700s and 1800s and today is a UNESCO world heritage site. Picture taken July 8, 2019. REUTERS/Zohra Bensemra 

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