Here is a UNESCO documentary on Gorée, the Slave Island off Senegal,: which President Obama and his family are visiting during their visit to that country. Although the island was itself a relatively minor point of departure for slaves, who were more often sent off from St. Louis to the north, it stands as a symbol of the enslavement, transport and genocide of millions (large numbers died during the Atlantic Passage, chained below decks in an unsanitary environment).
About the Author
Juan Cole is the founder and chief editor of Informed Comment and Richard P. Mitchell Professor of History at the University of Michigan. He is author of, among many other books, Muhammad: Prophet of Peace amid the Clash of Empires. Follow him at @jricole.