On this week's show: Trita Parsi, President of the National Iranian American Council analyses the reasons behind the Trump administration’s controversial travel ban.Sybrina Fulton and Tracy Martin discuss their new book, ‘Rest in Power: The Enduring Life of Trayvon Martin’. They also reflect on how their lives have changed since their son’s tragic death. Actor David Oyelewo talks about his latest movie, ‘A United Kingdom’.