C.R. Gibbs: Slaves were bought and sold at Market Square in Alexandria ... We find, this is just another example of how essential, uh, slavery or the slave trade was to the beginning of the nation's capitol. And, in fact, it was a major economic engine for the country at this ... period.
Brian: This shameful trade became the source of a common expression. Alexandria slave dealers specialized in buying slaves from nearby Virginia plantations. Then, they sold them where demand was strongest - cotton plantations along the Mississippi River. What was the phrase that came out of this?
C.R. Gibbs: Being sold down the river.