Hundreds of thousands have taken to Hong Kong's streets to protest against a new law, which would extradite suspects to mainland China, Taiwan, and Macao for trial.
And in turn raised fears among activists about China's grip on the semi-autonomous island.
(SOUNDBITE) (English) 45-YEAR-OLD HONG KONG RESIDENT, BRUCE LUI, SAYING:
"Mainland China (uses) all sorts of (ways), to exercise a so-called dictatorship in Hong Kong, to kidnap the people the treat as (the) enemy."
The demonstrations appear set to become the biggest against the Chinese government in at least 15 years.
Reuters James Pomfret has been following the demonstrations.
(SOUNDBITE) (ENGLISH) REUTERS CORRESPONDENT, JAMES POMFRET, SAYING:
"People here aren't just your hard core protesters you have ordinary citizens. You have fathers, mothers, kids and they don't feel comfortable if the law is enacted because it will allow China in effect to impose or part of its legal system to encroach into Hong Kong for the first time ever. And this march could be a turning point in finally persuading the authorities to either postpone or scrap it."
The bill will be debated on Wednesday (June 12) and could come into effect at the end of this month.
Hong Kong's leader, Carrie Lam, has tweaked the proposal, but refused to scrap the bill - prompting calls for her resignation.
(SOUNDBITE) (ENGLISH) REUTERS CORRESPONDENT, JAMES POMFRET.
"It's such an overwhelmingly large number of people that it will be very difficult for Hong Kong's leader, Carrie Lam, and the Beijing communist leaders to ignore this. And
they need to do something. They need to respond to this and whether it's a postponement or of this law or scrapping. We'll just have to wait and see."
Senior judges in Hong Kong have expressed their concern over a lack of trust in Chinese courts, and human rights groups are worried about the use of torture and lack of judicial rights on the mainland.