Historian and genealogist Antoinette Harrell has uncovered cases of African Americans still living as slaves 100 years after the signing of the Emancipation Proclamation. The 57-year-old Louisiana native has dedicated more than 20 years to peonage research. Through her work, she's unearthed painful stories in Southern states like Louisiana, Mississippi, Arkansas, and Florida. Over a series of interviews, she told Justin Fornal about how she became an expert of modern slavery in the United States.