About three dozen protestors were camped in the airport’s arrivals area, a day after a mass demonstration and frenzied mob violence forced more than 100 flight cancelations.

But check-in counters were open and flights appeared to be operating normally. Protestors spread pamphlets and posters across the floor in a section of the terminal but were not accosting travellers.

A statement from the airport’s management said it had obtained “an interim injunction to restrain persons from unlawfully and willfully obstructing or interfering” with airport operations.

It said an area of the airport had been set aside for demonstrations, but no protests would be allowed outside the designated area.

The airport had closed check-in for remaining flights late Tuesday afternoon as protestors swarmed the terminal and blocked access to immigration for departing passengers. Tuesday’s cancelations were in addition to 200 flights backlogged from Monday.

Most of the protestors left after officers armed with pepper spray and swinging batons tried to enter the terminal, fighting with demonstrators who barricaded entrances with luggage carts.

Riot police clashed briefly with the demonstrators, leading to several injuries and prompting at least one officer to draw a handgun on his assailants.

The burst of violence included protestors beating up at least two men they suspected of being undercover Chinese agents. Airport security appeared unable to control the crowd, and paramedics later took both men away.

Police have acknowledged using “decoy” officers, and some protestors over the weekend were seen being arrested by men dressed like demonstrators — in black and wearing face masks.