We might like to think that most of the choices we make, from what to have for lunch to how to vote in an election are entirely voluntary. But are they? Humans are social animals, and our desire to take part in group behavior is not lost on the people trying to influence us – and they're getting better and better at guiding us exactly where they want us to go. CGTN Europe's The Agenda program examines how data has become a crucial global currency.