China says violent protests in Hong Kong are 'undisguised challenge',

China regards the violent actions of some protesters in Hong Kong as an 'undisguised challenge' to the 'one country, two systems' formula under which the city is ruled, state television reported on Tuesday. A representative of China's Hong Kong affairs office condemned the violence of some protesters, who are angered by a proposed extradition bill, and said Beijing supported the Hong Kong government in holding violent criminals responsible, the report said