A 20-year-old Hong Kong student was sentenced to three years and seven months in prison on Nov. 23, the youngest activist to be jailed under the Beijing-imposed national security law. The sentence was handed down three weeks after Tony Chung pleaded guilty to charges of secession and one count of money laundering. Despite the charges, Chung said at his trial on Nov. 3 that he has a “clear conscience.” The charges were in relation to Chung’s role in Studentlocalism, a pro-independence student organization that was disbanded before Beijing implemented the national security law in Hong Kong last June. The law criminalizes four vaguely defined categories of offenses, including secession, subversion, and collusion with a foreign country. People who break the law can face up to life in prison. The prosecutor, Ivan Chung, claimed that Chung “continued his endeavor and the pursuit of his political ideas”—which violates the security law—by forming …