Matt Chorley ventures on to the much-hyped social media app, and joins a room with Conservative MP Esther McVey and Labour's Stephen Doughty to find out how British politicians are using it, while the New Yorker's Jiayang Fan describes how young people in China used it to discuss human rights abuses - before the app was banned.

PLUS: Finkelvitch - Daniel Finkelstein and David Aaronovitch give their take on the political news.

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