In a Visual Investigation, The New York Times shows how the Hong Kong police used excessive force by tear-gassing, beating and dragging protesters on June 12 (6mn23)
https://www.youtube.com/watch?feature=youtu.be&fbclid=IwAR2LLR52ebXsGtPaVWgC_UsQZf7ZaUmZVbSqDHU95TtBVUHVEFTI1owqX8Y&v=gHfWuUhrKQg&app=desktop

Hong Kong Free Press: Chaos in Hong Kong mall as police and anti-extradition law protesters clash
https://youtu.be/YYpEXwQMtRY