"Resist Beijing, Liberate Hong Kong" and "Stand with Hong Kong, fight for freedom" were two of the chants repeated by demonstrators, many of them clad in black shirts and wearing masks.
Some posters read "President Trump, please liberate Hong Kong.”
"Hong Kong is at the forefront of the battle against the totalitarian regime of China," said march organizer Panzer Chan. "Please support us in our fight."
Protests against Chinese governance have now entered their third month in Hong Kong, continuing after an extradition bill was pulled from the Hong Kong government. Hong Kong is a semiautonomous territory of China and a top global financial center.
A minority of protesters smashed subway station windows Sunday, and police responded with a handful of tear gas rounds, Fox News’ Jonathan Hunt reports.
The Associated Press contributed to this report.