Privacy Crisis Engulfs Facebook

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Facebook wants to rebuild trust after data on millions of its members was passed to a political consultancy - Cambridge Analytica - that worked for Donald Trump's campaign, without the users knowing. But is it a turning point for the way in which Facebook and the other tech giants do business? Plus are autonomous flying taxis a serious prospect for easing urban congestion? And are African governments too close to Facebook when it comes to safeguarding their citizens' privacy? Presented by Rory Cellan-Jones, with BBC tech reporters Dave Lee and Jane Wakefield, and special guest Emma Mulqueeny, expert on digital transformation and digital democracy. (Image: On-screen Facebook logo reflected in a woman's eye, Credit: CHRISTOPHE SIMON/ AFP/ Getty Images).