The young pro-democracy activist Joshua Wong has been arrested by police in Hong Kong.
Protesters staged a sit-in ahead of a visit by the President of China, Xi Jinping, intended to celebrate 20 years of Chinese rule. 
Before he was arrested, Mr Wong gave a speech in which he said: “Hong Kong people will contiponue to fight for democracy, until the day we get back our rights.”
Ahead of the anniversary, state broadcaster China Central Television has been running daily news features extolling what it calls the inextricable ties between China and Hong Kong in fields ranging from sports to the military and the arts. 
But underneath the surface, tensions are simmering as Hong Kongers, especially the young, chafe at life under the tightening grip of China’s Communist leaders. 
“People are not celebrating but worrying about Hong Kong’s future and its current situation,” said Nathan Law, who at age 23 was elected the city’s youngest-ever …