Tomorrow marks the 50th anniversary of the assassination of Martin Luther King.

America's most famous civil rights activist was in Memphis on 4 April 1968 to support a strike by black sanitation workers in the city when he was shot.

Cal Thomas and Marion McKeone reflected on his life and legacy in our weekly US slot and gave their thoughts on how far the civil rights campaign has come since then.

To catch the full chat press the play button on the image on the top of the screen