'Clean Up This Mess': The Chinese Thinkers Behind Xi's Hard Line

Chinese academics have been honing the Communist Party's authoritarian response in Hong Kong, rejecting the liberal ideas of their youth.

When Tian Feilong first arrived in Hong Kong as demands for free elections were on the rise, he said he felt sympathetic toward a society that seemed to reflect the liberal political ideas he had studied as a graduate student in Beijing.

Then, as the calls escalated into protests across Hong Kong in 2014, he increasingly embraced Chinese warnings that freedom could go too far, threatening national unity. He became an ardent critic of the demonstrations, and six years later he is a staunch defender of the sweeping national security law that China has imposed on the former British colony.