Prominent media tycoon and pro-democracy campaigner Jimmy Lai has been charged under Hong Kong’s national security law, local media reported on Friday, while a teenage activist has been found guilty of insulting China’s national flag. Al Jazeera reports that the Hong Kong Police confirmed that a 73-year-old man had been charged with offences including “collusion with a foreign country or with external elements to endanger national security” and would appear in court on Saturday.