Venus and Serena Williams taught by father to avoid gun fire

Richard Williams father of Venus and Serena talks to Richard Bacon about facing up to the Ku Klux Klan, seeing his best friend tortured and killed, and teaching his daughter's to duck and roll to avoid gun fire as they practised on court.

He said he 'planned' they were going to be tennis champions even before they were born.

This clip is originally from the Richard Bacon programme 10th July 2014.