Hong Kong police have fired water cannons and tear gas at the crowds that deepened an illegal march, with hardcore protesters throwing gas bombs and scrap companies to face a wrath of anger following recent attacks on protesters for democracy.
Authorities had banned Sunday's rally in Tsim Sha Tsui, a tightly packed shopping area filled with luxury boutiques and hotels, citing public safety and past violence from hardcore protesters.
But tens of thousands joined the unsanctioned demonstration, holding pressure on the city's pro-Beijing leaders after nearly five months of protests and political unrest.
In a familiar pattern, the huge rally began peacefully.
However, chaos soon erupted when smaller groups of protesters threw gas bombs at police, subway entrances and at Chinese mainland bank branches and vandalized several stores.
Police responded with hills of tear gas and rubber bullets and relay charges.  Throughout the afternoon, a water with a cannon car chased against protesters along Nathan Road, one of the city's busiest shopping roads, leaving it streaked with blue dye.
The dye in the water, used to identify protesters, also contains a painful pepper solution.
The entrance to the city's largest mosque was bathed in blue as the water cannon blasted a handful of people outside the building. Police said hitting the mosque was an accident and City Manager Carrie Lam later apologized.
As the protesters fled, the front lines stayed behind to curb the insurgency police and set fire to makeshift barricades. The collisions continued deep into the night.
A Xiaomi and a Best Mart store – both mainland Chinese companies – were set up.
Tensions were high after the group leader who organized this weekend's rally, Jimmy Sham, was in hospital after being attacked by unknown hammer attackers earlier this week.
Late Saturday, a man handing out pro-democracy flyers in his neck and stomach, reportedly by an attacker who shouted pro-Beijing slogans.  Many on Sunday's march said that they wanted to show that they were unprotected by the attacks and relocation of authorities to ban public gatherings.
"The more they suppress, the more we resist," said a 69-year-old protester, who gave her last name as Yeung. "Can the police arrest us all, tens of thousands of people?"
Philip Tsoi, a self-described protesting frontline, said they needed to continue to get numbers despite many hardcore activists he had been "arrested or injured" in recent weeks.
"What I want is a truly democratic government whose leader is elected by the people of Hong Kong instead of being elected by a communist regime," he said.
Vigilante violence has been mounted on both sides of the ideological divide.
In recent weeks, pro-democracy supporters have beaten hard people who vocally disagree with them – even though these fights tend to be spontaneous outbursts of mob eligibility during protests.  By contrast, pro-democracy figures have been attacked in a noticeably more targeted way, with at least eight prominent government critics, including politicians, beaten by unknown attackers since mid-August.
Protesters have labeled the attacks "white terror" And accused the city's shady organized crime groups of forming an alliance with Beijing supporters.
Beijing has condemned the protests as a foreign-backed entry and condemned attacks on those who express support for China.
But the attacks on pro-democracy figures have been largely silent.
Hong Kong has now been hit by 20 weeks of protests and with no political solution in sight, the French have intensified each month.
Hard-ship has embraced extensively vandalism, while the rebel police are quick to respond with tear gas, rubber bullets and, more recently, live rounds.
The contests triggered a now abandoned plan to allow extractions to the authoritarian mainland, but have been transformed into broader calls for democracy and police responsibility.  Protesters demand an independent investigation by the police, an amnesty for the arrested and lt free elections, all of which have been rejected by Beijing and Hong Kong's unelected leader Carrie Lam.
Earlier this month, Lam invoked a colonial violation law to ban face masks.
The decision initiated a new wave of protests and vandalism that shut down much of the city's transport network.