universities -- harvard, yale, princeton, brown, williams, the university of north carolina to name just a few -- are drenched in sweat, and sometimes the blood, as africans brought here as slaves. the book is called, "ebony & ivy: race, slavery and the troubled history of america's universities." m.i.t. american history professor craig wilder reveals how the slave economy and higher education grew up together. that "the american campus to it as a silent monument to slavery." welcome to democracy now! talk about america's most elite universities. what relation do they have to slavery? >> i think there are multiple relationships. the first and probably most provocative is the relationship to the slave trade itself. in the middle of the 18th century, from 1746 to 1759,