A local police officer is knocked down by violent radicals in south China's Hong Kong, Aug. 13, 2019. Two months on, the escalating violence in Hong Kong has taken a heavy toll on the social order. Violent radicals committed acts of vandalism, blocked main traffic lanes, harassed urban commuters and set fires at will. Many have called for a brake to be put on the blatant violence and for order to be restored. (Xinhua)