The risk for the Hong Kong Government is that the public, particularly the young, may develop the impression that the only way to stop unwanted policy initiatives is through violent protests.
With each successive major issue since Britain returned Hong Kong to Chinese rule in 1997, the level of violence at protests has risen before the Government has relented and changed course.
As many as one million people marched peacefully a week ago against the extradition bill. But the Government's stance did not begin to shift until a smaller demonstration unfolded midweek. It began peacefully until some protesters pried up bricks and threw them at police officers, and police responded by firing rubber bullets and tear gas.
At a news conference on Saturday, Lam denied that she was acting simply to prevent further violence at a planned rally tonight NZT.
"Our decision has nothing to do with what may happen tomorrow," she said. "It has nothing to do with an intention — a wish — to pacify."
But that assertion drew broad scepticism. Jean-Pierre Cabestan, a political scientist at Hong Kong Baptist University, said the family-friendly march a week ago was not enough to send a message.
"Without a bit of violence and political pressure on the authorities, you don't get a thing," he said.
Anson Chan, who was Hong Kong's second-highest official until her retirement in 2001 and now a democracy advocate, said, "Denied a vote at the ballot box, people are forced to take to the streets to make their voices heard."
In the first years after Hong Kong's handover in 1997, the government tended to be more responsive. A previous government had given up passing national security legislation in 2003 after 500,000 people marched peacefully.
That march was so tame that not a single person was arrested and the staff at an Van Cleef & Arpels jewellery store at the end of the protesters' route did not close their steel security shutters or even remove the extremely expensive diamond jewellery from the store's windows.
The extradition bill debacle underlines Beijing's central dilemma in Hong Kong. It wants to retain complete control, and so does not want to allow full democracy in the semi-autonomous territory.
But without democracy, a succession of Hong Kong governments have blundered into political crises by underestimating or ignoring the public's concerns — and each time, Beijing gets some of the blame. Some of Lam's close advisers say that it is unclear whether she had any discussion with Beijing leaders in advance about the extradition bill.
Yesterday, Lam repeatedly declined to discuss her conversations with Beijing leaders.
The Hong Kong Government has also proved steadily more prone to push on, at least initially, in the face of public outcry.
Hong Kong's leaders increasingly echo top Beijing officials in perceiving malevolent foreign forces in stirring up protests. That foreign influence appears to consist of meetings that Hong Kong democracy advocates have arranged with US officials and politicians when they fly to Washington.
But Lam and her senior advisers have nonetheless distrusted the sincerity of the protesters.
"The riots I believe were instigated by foreign forces and it is sad that the young people of Hong Kong have been manipulated into taking part," said Joseph Yam, a member of Lam's Executive Council, the territory's top advisory body.
Suspicions of foreign influence make the retreat by Lam even more surprising. But the path to this week's public policy fiasco really appears to have begun in November.
That was when Lam and her top aides travelled to Beijing for a rare meeting with Xi. He gave a long speech telling them to safeguard national security, according to a transcript released by the official Xinhua News Agency.
The speech included what looked like a message that Hong Kong could not postpone indefinitely its legal duty under the Basic Law, its mini-constitution, to implement national security laws against sedition, subversion, secession and treason.
"Compatriots in Hong Kong and Macau should improve the systems and mechanisms related to the implementation of the constitution and the Basic Law," Xi said.
But the 2003 experience underlined how hard it would be to pass national security legislation. Lam was also deeply troubled last winter by another issue.
She had received five letters from the parents of a young woman who was slain in Taiwan, allegedly by her boyfriend who then returned to Hong Kong. The absence of an extradition arrangement between Hong Kong and Taiwan, an island democracy that Beijing regards as part of China, complicated the extradition of the young man.
Lam decided that a short bill — just 10 articles — should be introduced in the legislature to make it easier to extradite people.
The bill was brought to a meeting of the Executive Council, a top advisory body, right before a three-day Chinese New Year holiday, and was approved with virtually no discussion, said a person familiar with the council's deliberations who insisted on anonymity.
The council consists of the government's ministers plus 16 business leaders and pro-Beijing lawmakers. A holdover from the colonial era, the council is often criticised as an insular group with little to no accountability.
The week after the holiday, Lam promptly announced the legislation.
But the bill also called for police to provide what is known in legal jargon as "mutual legal assistance in criminal matters." Hong Kong's top finance officials and leading financiers, who were at the meeting right before Chinese New Year, had not been alerted that the extradition bill would also allow mainland security agencies to start requesting asset freezes in Hong Kong.
They were appalled when they learned that this was involved, said the person with a detailed knowledge of the meeting. Yam did not discuss the council meeting but other people familiar with the meeting did so on condition of anonymity because of rules banning disclosure of the council's activities.
Lam's bill exposed not only Hong Kong citizens to extradition to the mainland but also foreign citizens. That horrified the influential chambers of commerce that represent the West's biggest banks, which almost all have their Asia headquarters in Hong Kong, as well as some of the West's biggest manufacturers, which keep staff in Hong Kong while overseeing factories on the mainland.
The business community began pressing for a halt to the extradition bill. With the Government having now stopped consideration of that bill, even Lam's allies in Hong Kong say that she almost certainly does not retain enough political capital to pass the national security legislation that Beijing really wanted.
Shortcomings in the Hong Kong Government's handling of the extradition issue underline that the chief executive is only accountable to Beijing. Yet Beijing has also promised Hong Kong a "high degree of autonomy."
The Communist leadership likes the political structure because it ensures the loyalty of the Hong Kong Government, and it rebuffed protesters who demanded free elections five years ago. But the system means Hong Kong's leader often misreads and sometimes ignores public opinion and operates with limited feedback even from Beijing.
"Had the chief executive been elected by Hong Kong people instead of by Beijing, perhaps he or she would not have tabled that bill," Cabestan said.
Written by: Keith Bradsher
© 2019 THE NEW YORK TIMES