Hong Kong police fend off airport protest but tear gas fired again in Kowloon.

Hong Kong in flames.

This was the scene on Saturday night - and not just anywhere in the city - but outside a police station.

It was a response from anti-government protesters to the closure of some train stations - a measure designed to stop them from gathering.

More than three months of demonstrations have at times paralysed Hong Kong.

The proposed extradition bill - which could have led to suspected criminals being taken to mainland China for trial - has long since been shelved.

But still there is no end in sight to the sometimes violent and disorderly scenes.

On Friday night, it was much the same story.

Police fired rubber bullets, tear gas and pepper spray to clear protesters outside a subway station on the densely populated Kowloon peninsula.

Many of them - masked and dressed in black - took cover behind umbrellas and barricades from street fencing.

Some had broken through a metal grill to enter a station where they pulled down signs.

In Hong Kong airport, a heavy police presence proved effective on Saturday.

Extra security checks managed to stop protesters from bringing the airport to a halt as in previous weeks.

But it feels like it might be some time yet before scenes like these are no longer the norm in Hong Kong.