China is quickly implementing the new Hong Kong National Security Law. Books by pro-democracy figures are disappearing from shelves. A clause denying the rights to political expression has already been used to arrest people.
WATCH: China squeezing freedom from Hong Kong, pro-democracy books disappearing
Riot policemen arrest a protester during a rally to show support for Uighurs and their fight for human rights in Hong Kong, Sunday, Dec. 22, 2019. (AP Photo/Lee Jin-man)