Juneteenth is one of the oldest celebrations commemorating the end of slavery in the United States. On June 19, 1865, a military decree was announced in Galveston, Tex., informing enslaved people in the Confederate state that they were free. On Friday, June 18 at 12:00pm ET, Washington Post opinions writer Jonathan Capehart speaks with Pulitzer Prize-winning historian and Texas native Annette Gordon-Reed about her new book “On Juneteenth,” the legacy of slavery and the struggles that remain to achieve racial equality.

Watch live: wapo.st/gordonreed