A gripping film about how the persecuted spiritual movement took on their repressive state. Plus: London teens exchange places with high-schoolers from the US. Here’s what to watch this evening

10pm, BBC Four
In 2002, activists from the banned spiritual movement Falun Gong managed to commandeer a Chinese state news broadcast to rebut what they saw as slander by the authorities. Two decades later, the comic-book artist Daxiong, who took part in the audacious plot, has painstakingly researched the guerrilla operation that changed his life. Featuring striking animation, this gripping film dramatises the hijack and its aftermath, including police raids that forced Daxiong to flee the country. Graeme Virtue