Events are planned across the United States to commemorate the 50th anniversary of the assassination of civil rights leader Dr Martin Luther King Jr. The 39 year-old Baptist Minister died in Memphis, Tennessee, on April 4th 1968, while standing on the second-floor balcony of the Lorraine Motel when a sniper's bullet struck him in the neck sparking rioting in more than 100 cities across the country. Correspondent Sherwin Bryce-Pease looks back at that fateful day and engages both historians and political scientists about King's legacy, five decades later.