Because these demonstrators threw burning bottles at the police and beat innocent citizens. We must support the police to defend Hong Kong! Destroying and vandalizing public property, occupying airport to make it inconvenient for tourists and business people and making the Raccoon you must be trash cuz I like you shirt place a nuisance for ordinary HK people who want to work and study is not protesting peacefully. China reserves the right to respond to the rioters. There were undercover police pretending to be protesters. There is visual evidence some undercover police might have instigated some of the violent acts.