The skirmish on a main drag in the outlying Tsuen Wan district followed a march that ended in a nearby park. While a large crowd rallied in the park, a group of hard-line protesters took over a main street, strewing bamboo poles on the pavement and lining up orange and white traffic barriers and cones to obstruct police.
After hoisting warning flags, police used tear gas to try to disperse the crowd. Protesters responded by throwing bricks and gasoline bombs toward the police. The result was a surreal scene of small fires and scattered paving bricks on the street between the two sides, rising clouds of tear gas and green and blue laser lights pointed by the protesters at the police.
The protesters eventually decided to abandon their position. Two water cannon trucks and a phalanx of police vehicles with flashing lights joined riot police on foot as they advanced up the street. They met little resistance. Television footage showed a water cannon being fired once, but perhaps more as a test, as it didn't appear to reach the retreating protesters.
Prior to the skirmishes, tens of thousands of umbrella-carrying protesters marched in the rain. Many filled Tsuen Wan Park, the endpoint of the rally, chanting, "Fight for freedom, stand with Hong Kong," the South China Morning Post newspaper reported.
The march in Hong Kong's New Territories started near the Kwai Fong train station, which has become a focal point for protesters after police used tear gas there earlier this month. Police with riot gear could be seen moving into position along the march route.
Protesters have taken to the semiautonomous Chinese territory's streets for more than two months. Their demands include democratic elections and an investigation into police use of force to quell the protests.
A large group clashed with police on Saturday after a march in the Kowloon Bay neighborhood, building barricades and setting fires in the streets. Police said they arrested 29 people for various offenses, including unlawful assembly, possession of offensive weapons and assaulting police officers.
The clashes, while not as prolonged or violent as some earlier ones, ended a brief lull in the violence. The protests had turned largely peaceful the previous weekend, after weeks of escalating violence.
In nearby Macao, another Chinese territory, a pro-Beijing committee chose a businessman as the gambling hub's next leader with little of the controversy surrounding the government in Hong Kong.
Ho Iat-seng, running unopposed, will succeed current leader Chui Sai-on in December. Asked about the protests in Hong Kong, the 62-year-old Ho said they would end eventually, like a major typhoon.
Protesters in Hong Kong have demanded that the city's leader, Carrie Lam, also chosen by a pro-Beijing committee, step down, though that demand has evolved into a broader call for fully democratic elections.