America remembers Martin Luther King

January 20th is Martin Luther King Day, a US federal holiday to remember the murdered civil rights leader. The event was first observed in 1986 - so what does it mean to Americans today? Shirley Franklin was Mayor of Atlanta from 2002 to 2010 - the first black woman to hold the job in a major southern city. She spared time for Business Matters on what she calls "a great day". We also speak to Marcus Baram, author of the Gil Scott Heron biography Pieces of a Man, on the music Dr King inspired.