An award-winning Hong Kong filmmaker, who previously directed a documentary on the 2019 social unrest, has said that authorities banned the screening of his new campus thriller, citing national security concerns. Kiwi Chow Kwun-wai, whose past works include Revolution of Our Times and Ten Years anthology film, revealed in a social media post on Tuesday that he had received an official letter denying approval for the release of Deadline in the city. The 46-year-old director said his team...