U.S. President Barack Obama looks down as he approaches the 'Door of No Return,'
U.S. President Barack Obama looks down as he approaches the 'Door of No Return,' through which slaves once passed as they boarded ships for the Americas, at the slave house on Goree Island, in Dakar, Senegal, Thursday, June 27, 2013. Obama is calling his visit to a Senegalese island from which Africans were said to have been shipped across the Atlantic Ocean into slavery, a 'very powerful moment.' President Obama was in Dakar Thursday as part of a weeklong trip to Africa, a three-country visit aimed at overcoming disappointment on the continent over the first black U.S. president's lack of personal engagement during his first term. (AP Photo/Rebecca Blackwell)
Read the article: Obama starts long-awaited Africa tour at slave port