Joshua Wong, secretary general of Demosisto Party, Hong Kong

Stephen Sackur speaks to Joshua Wong, a leader of the so-called umbrella pro-democracy protests that swept Hong Kong in 2014. Later this month a new chief executive will be voted into office in Hong Kong. Elected by members of the territory's economic and political elite and tied closely to the Beijing government, activists are calling for universal suffrage in the territory instead. Has Beijing managed to neutralise Hong Kong's youthful rebels?