UN Secretary-General Ban Ki-moon (C) speaks during the unveiling ceremony of a permanent memorial named "Ark of Return" to honour the victims of slavery and the transatlantic slave trade, at the UN headquarters in New York, on March 25, 2015. The UN unveiled a permanent memorial at the UN Headquarters in New York on Wednesday to honor the victims of slavery and the transatlantic slave trade. (Xinhua/Niu Xiaolei)
UN Secretary-General Ban Ki-moon (C) speaks during the unveiling ceremony of a permanent memorial named “Ark of Return” to honour the victims of slavery and the transatlantic slave trade, at the UN headquarters in New York, on March 25, 2015. The UN unveiled a permanent memorial at the UN Headquarters in New York on Wednesday to honor the victims of slavery and the transatlantic slave trade. (Xinhua/Niu Xiaolei)UN Secretary-General Ban Ki-moon (standing on stage) speaks during the unveiling ceremony of a permanent memorial named “Ark of Return” to honour the victims of slavery and the transatlantic slave trade, at the UN headquarters in New York, on March 25, 2015. The UN unveiled a permanent memorial at the UN Headquarters in New York on Wednesday to honor the victims of slavery and the transatlantic slave trade. (Xinhua/Niu Xiaolei)Artists perform at the end of the unveiling ceremony of a permanent memorial named “Ark of Return” to honour the victims of slavery and the transatlantic slave trade, at the UN headquarters in New York, on March 25, 2015. The UN unveiled a permanent memorial at the UN Headquarters in New York on Wednesday to honor the victims of slavery and the transatlantic slave trade. (Xinhua/Niu Xiaolei)UN Secretary-General Ban Ki-moon (C) speaks during the unveiling ceremony of a permanent memorial named “Ark of Return” to honour the victims of slavery and the transatlantic slave trade, at the UN headquarters in New York, on March 25, 2015. The UN unveiled a permanent memorial at the UN Headquarters in New York on Wednesday to honor the victims of slavery and the transatlantic slave trade. (Xinhua/Niu Xiaolei)UN Secretary-General Ban Ki-moon (L) and UN General Assembly President Sam Kutesa cut the ribbon during the unveiling ceremony of a permanent memorial named “Ark of Return” to honour the victims of slavery and the transatlantic slave trade, at the UN headquarters in New York, on March 25, 2015. The UN unveiled a permanent memorial at the UN Headquarters in New York on Wednesday to honor the victims of slavery and the transatlantic slave trade. (Xinhua/Niu Xiaolei)People take pictures of a newly unveiled permanent memorial named “Ark of Return” at the UN headquarters in New York, on March 25, 2015. The UN unveiled a permanent memorial at the UN Headquarters in New York on Wednesday to honor the victims of slavery and the transatlantic slave trade. (Xinhua/Niu Xiaolei)
