In Hong Kong, pro-democracy legislators will move the High Court today, seeking to overturn a law banning protesters from wearing face masks.<br />''<br />'' The Court has already refused to grant an injunction to halt the ban. But the legislators say the law is unconstitutional and they will be raising new legal points at a court hearing. Dennis Kwok, the leader of the 24 legislators bringing the court action said, it is one of the most important constitutional cases in the history of Hong Kong.<br />'' <br />'' Chief Executive Carrie Lam introduced the ban under a colonial-era regulation. Yesterday, she defended her decision to invoke emergency powers in order to restore order.<br />'' <br />'' Meanwhile, Hong Kong's transport operator resumed metro service this morning, but some stations remain closed due to serious vandalism. Services had been suspended yesterday after stations and businesses came under attack in violent anti-government protests on Friday.<br />'' <br />''<br />''Many shops and businesses which had remained closed yesterday reopened this morning, but more anti-government protests are expected later in the day.<br />