After two consecutive days of chaos at Hong Kong International Airport, UN High Commissioner for Human Rights Michelle Bachelet expressed her concern and condemned "any form" of violence or destruction of property and urged the demonstrators to "express their views in a peaceful way."

"She notes the Chief Executive of China's Hong Kong Special Administrative Region (HKSAR)'s commitment to 'engage as widely as possible' and to 'listen to the grievances of the people of Hong Kong'," said Bachelet's spokesperson, Rupert Colville. 

"She stressed an open and inclusive dialogue aimed at resolving all issues peacefully," Colville told reporters in Geneva on Tuesday.

"The rights of freedom of expression and peaceful assembly and the right to participate in public affairs are expressly recognized in the Universal Declaration of Human Rights, as well as the International Covenant on Civil and Political Rights which is incorporated in the Basic Law of the HKSAR," the human rights chief maintains.

Hong Kong International Airport canceled all remaining flights for a second day amid ongoing protests on Tuesday.