Hong Kong, Nov. 18 -- Hong Kong's High Court ruled on Monday that the recently introduced regulation prohibiting residents from wearing face masks was incompatible with the Basic Law, the city's de facto constitution.

Amid an escalation in civil unrest and violence in the city, the government in Hong Kong introduced in early October a Prohibition on Face Covering Regulation under the Emergency Regulations Ordinance (ERO), which banned residents from wearing face masks. The government argued that the ordinance was necessary to help the police identify perpetrators of violence during protests.

The city's high court judges ruled on Monday that the ERO, which was cited by the government to invoke the new regulation, was incompatible with the ...