Bookseller Lam Wing-kee (C) takes part in a protest march with pro-democracy lawmakers and supporters in Hong Kong, China June 18, 2016. REUTERS/Bobby Yip

Bookseller Lam Wing-kee (C) takes part in a protest march with pro-democracy lawmakers and supporters in Hong Kong, China June 18, 2016. REUTERS/Bobby Yip

Bookseller Lam Wing-kee (C) takes part in a protest march with pro-democracy lawmakers and supporters in Hong Kong, China June 18, 2016. REUTERS/Bobby Yip

June 21, 2016 6:46 AM (UTC+8)