A group of hardcore protesters threw petrol bombs at a police station as violence flared in Hong Kong during a banned march that drew thousands.
Authorities refused permission for a march through an upmarket shopping area, citing public order concerns.
But large numbers defied authorities, with a small group of black-clad protesters attacking a police station.
Hong Kong has been convulsed by pro-democracy protests for more than four months.
The unrest in the territory, which is part of China but enjoys unique freedoms, has been the worst crisis since the British handover in 1997.