As part of our mini-series on women, sport and business we meet Cynt Marshall. She's the chief executive officer of the Dallas Mavericks and the first black female CEO in the history of the National Basketball Association, a professional basketball league in the United States.Cynt tells us about her background, where she found the drive to forge an enormously successful career and how she’s changed a toxic workplace culture when she arrived at the Mavericks.Presenter: Rahul Tandon Production: Helen Thomas and Carmel O’Grady(Image: Cynt Marshall; Credit: Getty Images)