Hong Kong’s chief secretary, Matthew Cheung, has expressed his disappointment with the resumption of violent protests in the Chinese city after a period of relative calm, admitting, however, that “deep-rooted problems” must be addressed. “The work of stopping the violence has not yet been completed; we need to keep working on it. At the same time, we need to put effort on resolving deep-rooted problems,” Cheung said at a weekly ...