If you missed it, you can listen to today's Tavis Smiley show on Chicago Public Radio. Smiley discussed the announcement this week by the Justice Department that it was re-opening an investigation into the 1955 murder of Emmett Till, a 14-year-old African-American Chicago resident who was kidnapped and murdered in August 1955 while visiting family in Money, Mississippi. Smiley talked with Keith Beauchamp, a filmmaker from New York who spent the last nine years making the documentary "The Untold Story of Emmett Louis Till." Other guests included Emmett Till's cousin Simeon Wright and trial attorney Raymond Brown. Many people have contributed to this trial being investigated, including U.S. Congressman Bobby Rush, as previously reported.