Hong Kong police, protesters clash in 16th weekend of rallies

Police fired tear gas and rubber bullets at small groups of hardcore activists who had built barricades in the outlying town of Tuen Mun, some of them lobbing bricks and at least one Molotov cocktail.

Multiple people were seen being arrested in the clashes, which were less sustained than the intense battles of previous weekends.

Protesters highlighted viral video of police late Saturday in Yuen Long town using pepper spray to subdue a 73-year-old man known as "Uncle Chan" or "Grandpa Chan," described as an prominent activist who urged riot police to show restraint during demonstrations.

Hong Kong has been convulsed by 16 straight weekends of sometimes violent rallies calling for greater democratic freedoms and police accountability.

The movement is the biggest challenge to China's rule since Hong Kong was handed back by Britain in 1997 and shows no sign of ending, with city leaders and Beijing taking a hard line.

In a now familiar pattern, the day began with a peaceful rally.

At one point, a handful of protesters pulled down China's flag flying outside a local government office and burned it.

Tensions spiked after police snatch squads rushed into a park where crowds had gathered and made a series of arrests.

Hundreds of hardcore activists then built barricades and dismantled nearby fences to arm themselves with makeshift clubs.

Objects were also thrown onto nearby train tracks. 

But protesters showed little appetite in holding ground, quickly retreating as soon as police advanced.

By Saturday evening, pockets of demonstrators and police were playing a familiar game of cat and mouse. 

There were also skirmishes on Saturday evening in Yuen Long, a nearby town where protesters were attacked by local Beijing supporters in July.

People had gathered to mark the two month anniversary of that assault -- further fuelling animosity towards police, who were accused of being too slow to respond.