Jimmy Lai, an instigator of anti-government riots in China's Hong Kong Special Administrative Region (HKSAR), has been sentenced to 20 years in prison, bringing to a close Hong Kong's longest and most closely watched national security trial. HKSAR's officials and legal professionals have stressed that the case was not about political dissent – but about collusion, sedition and prolonged efforts to solicit foreign sanctions and hostile actions against the city. So what's behind Jimmy Lai's national security sentence, and what's often left out of Western headlines?