translation

This is what I think I heard.

Set the scene first. Mr Lam is a Democratic Party member in Hong Kong. He was leaving the government building walking on a pedestrian bridge, and "support the police" protestors were there and the fireworks started 6/30/2019.

some guy at the very begining "bleep, Kui Low Mow" ... a vulgar curse.

Old woman shouting midway in video: "Jow Gao" ... "Jow Gao" ... running dog ... running dog ...

maybe police said: "Suk, Leang Jeng Deh" ... Uncle, stay cool!

some guy crazy shouting: "Juei Jow Gao", "Juei Jow Gao" repeatedly ... chase running dog, chase running dog ...

another guy shouts: "Deng Kue Lok Hui" ... throw him off (the bridge)!

whole crowd at the end: "Jow Gao"! "Jow Gao"! "Jow Gao"! "Jow Gao"! ... well you know what that means.

And I thought I was a rabid nationalist ... lol ...