Sadly there are few museums in the world which deal with the issues of slavery:-

Check out the International Museum of Slavery in Liverpool: http://www.liverpoolmuseums.org.uk/ism/

And the permanent display at the London Docklands Museum: http://www.museumindocklands.org.uk/English/EventsExhibitions/Special/LSS/


To my surprise & horror I was unable to find any reference to an active Museum of Slavery in the USA though it seems that one is planned: http://www.usnationalslaverymuseum.org/home.asp