Watch Soap2day. The Mangrove Nine trial resulted from conflict between the police and the Black community in Notting Hill that had escalated from the end of the 1960s onwards. The Mangrove case began when around 150 Black people protested against long-term police harassment of the popular Mangrove Restaurant in Ladbroke Grove. A documentary film, 'The Mangrove Nine' (directed and produced by Franco Rosso), was made in 1973, and includes interviews with the defendants recorded before the final verdicts. The Mangrove Nine film portrays interviews with the defendants recorded before the final verdicts were delivered at the trial, as well as contemporary comments from Ian Macdonald and others.