Hong Kong protesters used lasers to confuse the riot police, who fired tear gas to disperse the crowd as violence escalated on another night of chaos.
Anti-government activists fought with officials against cat and mouse skirmishes on Saturday after being blocked by the airport during a security flash earlier in the day.
The city turned into chaos when bonfires and debris lined the streets. Dozens of activists desperately needed first aid after being hit by clouds of painful tear gas.
Handheld lasers that emit strong green and blue rays of light have been used by democracy-friendly activists to numb officials and confuse facial recognition cameras.
Protesters in Hong Kong used lasers to confuse the riot police, who tried to disperse the crowd with tear gas as the violence escalated on another chaotic night
The increased control aimed to avoid the chaos of the previous weekend when demonstrators blocked the access roads to the airport in a "stress test" protest, throwing rubble on train tracks and subway stations. Above: Riot police advance during a protest near the Mong Kok police station in Hong Kong
Dozens of activists desperately needed first aid after being hit by painful tear gas clouds. Above: A young woman and a man are treated with water after being hit by tear gas
The Hong Kong police fired rubber bullets and tear gas at protesters on another chaotic Saturday night
Anti-government activists fought with officials against cat and mouse skirmishes on Saturday after being blocked by the airport during a security flash earlier in the day. Above: Police arrest a woman protesting near the Mong Kok police station in the city
The woman was also seen curled up on the street near the Mong Kong police station when officers were standing above her
When the police ignored German Chancellor Merkel, she again called for a peaceful solution to the political unrest during her trip to Beijing, and demanded that the "violence" not end in a "catastrophe".
The Hong Kong protests overshadowed a three-day visit Merkel wanted to use to strengthen relationships between Chinese markets and German companies that are slowing at home.
Earlier in the day, the police flooded the airport and security officials checked hundreds of passengers to block a second weekend of protests and disruptions.
Travelers walking to and from the airport were stopped and searched for passports and plane tickets while bags were inspected to screen out anti-government activists.
Hong Kong residents and other democracy-friendly activists defiantly marched through the streets to force the police down the street
Riot police stand in front of demonstrators near the Mang Kok police station in the city. Today's protests reflect those that have been going on for months
Handheld lasers that emit strong green and blue rays of light have been used by democracy-friendly activists to numb officials and confuse facial recognition cameras
Tributes were left in front of the station's entrance after allegations that three demonstrators had died in the station after the closure on August 31. Above: Hundreds of flower tributes cover the closed entrance to Prince Edward Station in Hong Kong
The South China Morning Post reported that 63 people were arrested in connection with an incident at Prince Edward Station. Above: People also lit candles to accompany the floral honors outside the station
In addition to the floral honors, a graffiti with the words "Freedom or Death" was on a nearby white board
Numerous protesters were arrested during the skirmishes with the police, with officials using tear gas and truncheons to ward off democracy-friendly activists. Above: Police chase protesters down the street after people gather in front of Mong Kok Police Station
Many of the demonstrators were not deterred by the use of tear gas by the police. Above: Hong Kong residents and demonstrators chant slogans and chase the police down the street
Demonstrators use the light from their cell phones as they gather outside the Mong Kok police station in Hong Kong today
A woman is arrested by the police after the stay and protesters gathered outside the Mong Kok police station
The police are waiting to disperse a crowd of residents and demonstrators during another messy Saturday night
Chancellor Merkel reiterated her renewed calls for a peaceful solution to the unrest during her trip to Beijing, demanding that the "violence" not end in a "catastrophe".
Anti-government activists opposed officers and lit bonfires as another night of chaos ensued. Above: Demonstrators stand with umbrellas near the Mong Kong police station
A defiant protester dances in front of a number of riot police during a clearance operation in Mongkok, Hong Kong. An officer was seen with his hands on his hips as he watched the man
A journalist had to be treated after being hit by police pepper spray during today's protests. He was seen when paramedics treated his eyes
The demonstrators were not afraid to show defiance when a masked man raised his middle fingers to the police
Each police action was captured in front of the camera by both demonstrators with their smartphones and press representatives. Above: An officer with a pepper ball is filmed and photographed by journalists
The police shout and yell at press representatives and local residents as a retreat after dispersing a crowd from outside the Mong Kok police station
The persistence of protests and the willingness of thousands of activists to flood the street has prompted thousands of police officers to act in response. Above: Officers are moving down a street today during a demonstration
At the protest near the Mong Kok police station, a child was pictured with his mother who used her hands to cover his ears
The police waved truncheons and protective shields as they acted against demonstrators to disperse them outside of the Mangkok police station
Since the protests began in July, more than 1,800 people have been arrested. Above: An activist is lying on the floor when a policeman ties his hands
Intensive security came after a night of violence in which the riot police fired rubber bullets and tear gas to disperse the crowd when the Chinese city's political crisis hit week 14.
Police conducted roadside checks today and witnesses reported that at least two bus passengers were handcuffed and taken away after the police found face masks in their pockets.
An express train drove from Hong Kong directly to the airport and skipped all stations in between. Those with plane tickets were not allowed to enter the terminals, airport officials said.
The increased control aimed to avoid the chaos of the previous weekend when demonstrators blocked the access roads to the airport in a "stress test" protest, throwing rubble on train tracks and subway stations.
Last month, demonstrators also occupied the arrivals hall, stopping and delaying flights after a series of clashes with the police after 14 weeks of demonstrations.
Instead, a crowd of masked protesters gathered at a subway station in the Tung Chung area next to the airport on Saturday, chanting slogans and calling the police "killers", while anger over alleged brutality against demonstrators was widespread.
The shops at the station were closed and the riot police were on guard.
Firefighters extinguished small street fires that had been triggered during the Hong Kong police fighting
Dozens of demonstrators used umbrellas as a symbol of defiance and to shield themselves from today's clashes with the police
A protester was surrounded and arrested by the police after residents and demonstrators gathered in front of the Mong Kong police station in the city
This man was also arrested outside the Mong Kok police station. Officials were wearing hard hats and vests, and one was trying to stop journalists from taking pictures of the man's arrest
Officers carried rifles to fire tear gas bursts at demonstrators today. It is a tactic that they have used repeatedly during the ongoing clashes
Hong Kong police flooded the airport on Saturday, and security control screened hundreds of passengers to block a second weekend of disruption and violence
Several hundred travelers walking to and from the airport were checked for passports and plane tickets while the bags were searched
Police carried out roadside checks and witnesses reported that at least two bus passengers were handcuffed and taken away
Masked demonstrators shout slogans as they gather in a "stress test" at Tung Chung Station in Hong Kong today
The riot police secure the area in front of the MTR station Tung Chung in anticipation of protests
Officers with masks and helmets carried tear gas pistols and truncheons when they met protesters. Above: An officer holds a weapon that fires rubber bullets
A woman arrested by the riot police was crouched in a corner and surrounded by a horde of helmet-clad police officers
The police arrested today's clashes and tied hands behind the back of the demonstrators with plastic cuffs. Above: A man is arrested in Mongkok today
Officers in combat gear hold shields as they walk past a man sleeping on a wall. The demonstrators were not deterred by tear gas
The riot police dispersed the demonstrators and secured the area with vans to block roads. The protests have been going on for months and were triggered by the attempted introduction of a law that would have allowed extradition to mainland China
The police guard a group of residents and demonstrators who had gathered outside the Mong Kok police station
Traffic was also disrupted by the protests as these buses were blocked by makeshift barricades and trash cans placed on the street
People shout at the police as they guard a street before dispersing a crowd of residents and demonstrators after they gathered outside the Mong Kok police station
A police officer screams as he pushes media representatives back after the police arrest a number of demonstrators
Media representatives watch a protester hold a cake that says "Free Hong Kong, the Revolution of Our Time".
Hong Kong has been shaken by a series of protests against the government in the past three months. The demonstrations were initially triggered by a legislative proposal that would allow some criminal suspects to go to mainland China to court.
The airport, the eighth largest in the world, was a frequent target during a summer of protests triggered by an extradition law that would allow some criminal suspects to be sent to mainland China on trial.
Hong Kong leader Carrie Lam announced on Wednesday that her government would withdraw the bill, but that did not calm the protesters who had expanded their goals to other issues.
Chancellor Merkel visited China at the weekend and made two calls for a peaceful solution to the conflict in Hon Kong.
Merkel traf sich bei einem Besuch in Peking mit dem chinesischen Präsidenten Xi Jinping und Ministerpräsident Li Keqiang.
Am Samstag sagte sie: "Ich habe mich dafür eingesetzt, dass Konflikte gewaltfrei gelöst werden und dass alles andere aus meiner Sicht eine Katastrophe wäre", sagte Merkel.
Nach Gesprächen mit Präsident Xi Jinping und Ministerpräsident Li Keqiang sagte Merkel, Peking habe auf ihre Ansichten gehört.
"Das ist wichtig", fügte sie hinzu.
Es gab Online-Aufrufe an Demonstranten, ihre schwarzen Hemden abzuwerfen und Bordkarten zu fälschen, um Zugang zu Flughafenterminals zu erhalten.
Ein Mann reagiert, als ein Polizist seinen Schlagstock nach ihm schwingt, während ein weibliches Pressevertreter aufzeichnet, was passiert
Die Polizei führte festgenommene Demonstranten weg, darunter eine Frau, die mit gefesselten Händen an beiden Armen festgehalten wurde
Ein Mann hebt trotzig die Arme über den Kopf, als er vor Dutzenden von Demonstranten an der Wand einer Polizei steht
Während der anhaltenden Zusammenstöße mit der Polizei standen heute Hunderte von Demonstranten auf der Straße. Oben: Eine Gruppe von Menschen sieht zu, wie die Bereitschaftspolizei in ihrer Nähe steht
Ein Mann mit blutbedecktem Gesicht wurde bei den heutigen Protesten in Hongkong von Beamten in einen Polizeiwagen geführt
Ein Mann wurde genau in dem Moment abgebildet, als bei den heutigen Zusammenstößen mit der Polizei Pfefferspray auf sein Gesicht abgefeuert wurde
Demonstranten deuten auf Polizisten, die während einer Demonstration auf der Station Tung Chung eine Rolltreppe hinaufsteigen
Die Polizei überprüft am Flughafen die Tasche eines Passagiers, während Reisende auf Flug überprüft werden
Die Menschen beobachten von einer Brücke aus, wie sich Demonstranten in der Nähe der Station Tung Chung versammeln
Merkel traf sich am Freitag bei einem Besuch in Peking mit dem chinesischen Ministerpräsidenten Li Keqiang, als sie sich für eine friedliche Lösung für Monate der Gewalt und des Chaos einsetzte
Die Bereitschaftspolizei läuft am Freitag während einer Demonstration im Bezirk Mong Kok in Hongkong neben einer Straßenbarrikade
Demonstranten machen Lagerfeuer und verbarrikadieren sich mit Regenschirmen gegen die Polizei
Die Polizei warnte, dass Pläne, gefälschte Bordkarten zu verwenden, um Zutritt zu erhalten, Straftäter bis zu 14 Jahren im Gefängnis landen könnten. Die Polizei sagte auch, dass Autofahrer, die absichtlich langsamer fahren, um den Verkehr zu stören, wegen gefährlichen oder rücksichtslosen Fahrens angeklagt werden könnten.
Am späten Freitag brach in Hongkongs überfülltem Kowloon-Gebiet erneut Gewalt aus, nachdem die Polizei Tränengas- und Gummigeschosse abgefeuert hatte, als Demonstranten U-Bahn-Stationen zerschmetterten und auf der Straße Feuer legten.
Demonstrators retreated after riot police chased them down streets but they regrouped again.
Some lit piles of boxes to build burning barricades while others used hammers and metal rods to smash traffic lights and vandalize subway stations. Graffiti along walls read 'Boycott China' and 'Liberty or death.'
Police said three subway stations had to be shut down after protesters thrashed ticket machines, security cameras and turnstiles and damaged fire facilities. Police slammed the behavior as 'outrageous' and vowed to take 'resolute enforcement actions.'
The persistent violence has hurt Hong Kong's economy and sparked fears of a Chinese military intervention. Chinese officials have warned that Beijing will 'not sit idly by' if the situation worsens.
Hong Kong's pro-Beijing chief executive Carrie Lam announced her decision to formally withdrawn an extradition bill that sparked the protests in a television announcement yesterday
Protesters have adopted a new slogan, 'Five key demands, not one less.' In addition to the withdrawal of the extradition bill, they want an independent investigation into accusations of police brutality, the unconditional release of those detained during the protests, no more labeling of the protests as riots and direct elections of the city's leaders.
Lam has rejected those demands.
The protests show no signs of abating ahead of China's National Day celebrations on October 1, despite Lam's concession on the extradition bill.
Protesters plan to march to the U.S. Embassy on Sunday to drum up international support.
What's going on in hong kong
Hong Kong protesters are demanding democratic reforms and the complete withdraw of a law bill that would allow criminal suspects to be sent to mainland China to stand trial. Protesters are pictured waving their phones in a demonstration on August 28
Hong Kong has been rocked by a series of anti-government protests for more than five months.
The demonstrations were initially sparked by a proposed law that would allow some criminal suspects to be sent to the mainland China to stand trial.
Hong Kong is ruled under the 'one country, two system' policy and has different legal and governing systems to mainland China.
The principle was agreed upon by China and the UK before the former British colony reverted to Chinese rule in 1997.
However, many residents in the semi-autonomous city feel that their freedoms are eroding due to the tight political grip of Beijing.
The extradition bill was suspended indefinitely by the government in June, but the rallies have morphed into a wider pro-democracy movement that calls for government reforms and universal suffrage, among others.
Protesters are also demanding an independent inquiry into what they view as excessive violence from the police during clashes.
Mass rallies, sometimes attended by as many as two million people, have taken place every weekend since June 9.
Protesters have targeted government buildings, Beijing's representative office in Hong Kong, shopping centres and international airport to express their demands.
The demonstrations often start with a peaceful march or sit-in and end up in violent clashes between activists and police.
A repeated pattern sees activists throwing items such as bricks and petrol bombs at the police and anti-riot officers firing tear gas and rubber bullets to disperse crowds.
More than 5,000 people have been detained so far in connection to the unrest. Among them, nearly 40 per cent are students.
Beijing has described the situation in Hong Kong the 'worst crisis' the city has seen since its handover in 1997. It has also called some activists 'rioters' and 'political terrorists'.
The city's chief executive Carrie Lam on September 4 promised to formally withdraw the extradition bill, but the move failed to ease the chaos.
She is yet to satisfy the protesters' other demands.
On October 4, Lam invoked colonial-era emergency powers to ban protesters from wearing masks during rallies in a further bid to quell the unrest.
The extradition bill was formally withdrawn by the city's government on October 23.