Joshua Wong, Agnes Chow and Ivan Lam, all in their 20s, have been held since pleading guilty in November for organizing a protest last year that surrounded police headquarters.
The mass resignations are protesting the expulsion of four fellow opposition legislators that Beijing deems secessionist, after China granted local authorities new powers to remove politicians.
Law, who spoke to NPR's All Things Considered, announced late Wednesday that he had left the country following the enactment of a draconian new national security law targeting the territory.
Thousands of people gathered in Hong Kong's Victoria Park to commemorate the victims of the 1989 massacre in Beijing by China's military — even though this year's rallies were officially canceled.
The rally has been held each year since 1990 to commemorate the protest in Tiananmen Square, where the Chinese military opened fire on citizens who were calling for economic and democratic reforms.
During months of protests, the territory's chief executive has suffered setbacks in the streets and at the ballot box. But she still enjoys support from China, where she's paying a visit Monday.
China summoned the U.S. ambassador and issued a sharp response over the legislation, which allows the U.S. to sanction individuals who violate Hong Kong residents' rights.
While Chief Executive Carrie Lam vowed to listen "humbly" to voters, her backers in Beijing broadcast defiance. The election gave protesters a symbolic win, but its tangible impact remains in doubt.
The city reported that more than 2.9 million people voted, a turnout rate of more than 71%. More people voted in Sunday's local election than any election in Hong Kong to date.
The chief executive of Hong Kong signaled that she is prepared for a crackdown as the U.S. State Department called on the government to address the "underlying concerns" of protesters.
A student died Friday of injuries suffered in a fall as police dispersed protesters from a parking garage. Across the region, protesters mingled grief with grievance, renewing their calls for change.
An elections official said the pro-democracy activist's call for "self-determination" in the Chinese territory was inconsistent with pledging allegiance to the city and its constitution.
Jimmy Sham, who has taken an active part in organizing anti-government protests, was left bloodied and dazed after being attacked by a group of people reportedly wielding hammers.
Embattled Chief Executive Carrie Lam was unable to give her annual policy address before the territory's legislature amid shouts in support of anti-government protests and her resignation.
HKmap.live has been used by pro-democracy activists to keep track of protests and police activity. Apple says it was removed from the App Store because it was being used to "endanger law enforcement."
Doing business in China comes with major strings attached. This week, with the response to an NBA manager's tweet, it became evident that a few provocative words can cause those strings to tighten.
The developer of World of Warcraft and Hearthstone said a player known as Blitzchung went over the line when he said, "Liberate Hong Kong, revolution of our times!"
Despite the veiled threat that China's military could intervene in the territory, Chief Executive Carrie Lam said she still believes that the people of Hong Kong "should find solutions ourselves."
On Friday, Daryl Morey tweeted: "Fight for Freedom. Stand with Hong Kong." But he issued an apology after backlash from the Chinese Basketball Association and others.
The decision by Hong Kong Chief Executive Carrie Lam is intended to make it more difficult for protesters to hide their identities and thereby discourage further protests.
In an ominous first during weeks of protests, a demonstrator was shot in the chest and is now in the hospital. The mass rallies come as China celebrates 70 years of Communist Party rule.
Protesters rained down bricks and Molotov cocktails on government buildings and riot police deployed tear gas in some of the most forceful police responses since protests began in early June.
Social media networks banned hundreds of thousands of accounts last month. In NPR's assessment of the data, telling details begin to depict large disinformation campaigns.
