Pro-democracy politicians in Hong Kong have failed in their bid to overturn a ban on face masks being worn by protesters.
The ban was brought in by chief executive Carrie Lam under emergency powers on Friday.
However, the ban had little effect so far and activists, many wearing masks, took to the streets in their thousands after the announcement in another night of violence in the territory.
Authorities closed the entire subway network after stations were targeted.
Protesters set fires, attacked Chinese-owned businesses and fought running battles with police.
A group of pro-democracy politicians filed a legal challenge against the government's use of the law, which says a facial covering is illegal if it prevents someone at an "unlawful assembly" or "public procession" being identified.
It has now been blocked by the courts, with the reasons for the decision to be announced on Tuesday.
A peaceful march currently is underway on Hong Kong Island. Most people are in masks, in open defiance of the #AntiMaskLaw. So far it appears that this widely-hated mask ban, enforced via emergency laws, is entirely unenforceable. pic.twitter.com/pPalAIWwSt
— Mary Hui (@maryhui) October 6, 2019
On Sunday, protesters assembling in Causeway Bay again defied the ruling, wearing masks as they prepared to march.
Pro-democracy opposition politician Claudia Mo, who sits on the Legislative Council, said: "The government is getting more desperate. They'll do anything to quash the opposition.
"They're now introducing what I see as a weapon of mass destruction. They simply want to nuke Hong Kong. With this particular law in place, they can do anything.
"They can practically ban anyone, anything, anywhere in Hong Kong. The sweeping powers are simply unlimited.
The politicians are still planning to bring a judicial review to be heard later this month.
The protesters want democratic reforms and are calling for Ms Lam, the city's Beijing-backed leader, to resign.
She has said the ban on masks is needed to stop the violence.
Reporting by IRN
