In the early hours of 4 November 2019, Chow Tsz-lok, a 22-year-old student of the Hong Kong University of Science and Technology fell from the third floor inside a car park in Tseung Kwan O, Hong Kong, in the context of anti-government protests in the territory. Chow, who was clad in black clothing that had become an unofficial uniform for protesters, had been wandering alone inside the building in the moments preceding the fall. The car park was close to an area of confrontation between protesters and police.