Protesters stick photos of Gui Minhai, left, and other missing booksellers outside the Liaison Office of the Central People's Government in Hong Kong on January 3, 2016. © 2016 Vincent Yu/AP Images
Protesters stick photos of Gui Minhai, left, and other missing booksellers outside the Liaison Office of the Central People's Government in Hong Kong on January 3, 2016. © 2016 Vincent Yu/AP Images
