"Though it might have seemed perplexing — not least to the Senegalese — that America's leaders need to go to another continent in order to address an issue rooted so deeply in our own history, that geographic awkwardness speaks volumes about the odd place that slavery currently occupies in American culture and memory. Despite the frequent attention given to the subject, slavery is still somehow held an arm's length, or even an ocean's breadth, away.
There are any number of sites in this country far more intimately connected to America's slave past than Goree Island is..."

Including places where slaves were traded and bought like chattel off ships (urban seaports) or were hanged and burned at the stake for revolts (near courthouses and jails) or were regularly mocked in minstral shows (churches and halls). Yes there are no lack of sites to remember America's slave past-- just a lack of will and courage.