It was raining money in one of the Hong Kong SAR's poorest neighborhoods on December 15 as banknotes worth 100 Hong Kong dollars each (around 13 U.S. dollars) fluttered in the sky above Sham Shui Po's Keelung Street. A video emerged on Facebook showing a man, dressed in a black hoodie, dropping hoards of cash from a rooftop, sending a crowd of bystanders in a frenzy.