Hong Kong (CNN) - China's new national security legislation for Hong Kong was written and passed behind closed doors, without the consultation of the city's local government or legislature. It reportedly came into force on June 30, potentially rewriting the city's legal system -- despite the fact the overwhelming majority of residents have no idea of what precisely it will entail.
According to reports in Communist Party-controlled media, the law is expected to criminalize offenses such as secession, subversion against the central Chinese government, terrorism, and colluding with foreign forces. But hours after its reported passage, details remain vague, capping a particularly opaque process that has left analysts and activists guessing.
Speaking at a weekly press conference Tuesday morning, the city's leader Carrie Lam initially refused to answer questions about the law, saying it was "inappropriate for me to comment." Hours later she later defended it in a video speech to the United Nations Human Rights Council in Geneva, saying it will restore stability and prosperity to Hong Kong.
Her administration appears to have been cut almost completely out of the process -- yet it has not stopped them predicting the law will only impact a tiny minority of individuals in the city, and won't harm political freedoms and judicial autonomy.
In a statement last week, Lam said the legislation would be "in line with the rule of law" and the "rights and freedoms which are applicable in Hong Kong."
Some aren't taking any chances, however. Multiple opposition political parties had already disbanded by Tuesday afternoon, with members fearing prosecution under the new offenses of subversion or secession, which are applied broadly in China to crush anti-government dissent.
Prominent activist Joshua Wong announced soon after the bill's reported passage that he was leaving Demosisto, the political party he co-founded in 2016, but would continue to campaign independently. Other leading figures in the party, including former lawmaker Nathan Law and activist Agnes Chow, soon followed suit, and what was left of the party leadership eventually decided to cease operations.
Chow was barred from standing for election in 2018 over her membership in Demosisto, which had previously called for Hong Kongers to be allowed to decide their own future, including voting on a potential break from China.
Such talk could be illegal under the new law, if it follows the model of similar legislation in China as expected. Wong, Law and Chow have also been heavily involved in lobbying the international community to pressure Beijing over Hong Kong, which many expect to be classed as "colluding with foreign forces."
Two other political parties, the Hong Kong National Front and Studentlocalism, also said they were ceasing operations in the city, though both groups -- fringe pro-independence parties -- said they would continue to work overseas.
Some pro-independence figures are known to have fled Hong Kong in recent months, fearing arrest in connection with last year's often violent anti-government protests, or the upcoming law. On Sunday, Wayne Chan, convenor of the Hong Kong Independence Union, confirmed he had jumped bail and left the city. He had been facing protest-related charges.
"After the national security law is passed, we can anticipate that a large group of political figures will be arrested, and may be imprisoned immediately without bail," Chan wrote on Facebook.
More subtle signs of a chilling effect were also in evidence Tuesday, as shops and businesses which had previously been highly visible supporters of the city's protest movement began removing slogans and imagery that could be deemed illegal.
While pro-government groups and politicians welcomed the passage of the law -- former leader C.Y. Leung offered bounties for future prosecutions -- there was great frustration among many Hong Kongers over the continued lack of detail, and a feeling of almost being in limbo, knowing the law has been passed but not what that means.
In a letter to the city's government Monday, Hong Kong Bar Association chairman Philip Dykes said the secrecy of the law was "genuinely extraordinary" and called on the government to make clear how citizens' minimum rights will be guaranteed.
The Global Times, a nationalist Chinese state-backed tabloid, said the law was already having its effect, pointing to the resignation of Wong and others. Stanley Ng, a Hong Kong delegate to China's National People's Congress, appeared to endorse this view, saying in a Facebook video that part of the reason for the secrecy around the law was to enable "intimidation and deterrence."
Such uncertainty will likely persist beyond Tuesday night, when the bill is finally expected to be made public and gazetted. Regardless of how the offenses are described or the punishments laid down, many will be watching to see how strenuously police and prosecutors enforce them.
A key test will come on Wednesday, when Hong Kong marks the 23rd anniversary of the city's handover to Chinese rule. The day has traditionally seen an anti-government march through the city, but the protest has been banned this year.
Organizers say they will go ahead anyway. Yet how many people join them, and what offenses -- if any -- those people are deemed to be committing if they do, remains to be seen.