An anonymous, authentic video secretly filmed from taxi windows captures fragments of violence right in the middle of clashes between police and protesting Hong Kong residents. In addition to the contact sound of fights, screams, singing, chants of the slogan “Liberate Hong Kong! Revolution of our times!”, and the howls of those who've been beaten, we also hear the conflicting comments of taxi drivers from both sides of the border - Hong Kong and the neighboring mainland Shenzhen.