An estimated 1.7 million people in Hong Kong – a quarter of the population – defied police orders to stage a peaceful march after a rally in a downtown park, after two months of increasingly violent clashes that have prompted severe warnings from Beijing and failed to win concessions from the city’s government.

Huge crowds filled Victoria Park on Sunday afternoon and spilled on to nearby streets, forcing police to block traffic in the area. Torrential rain came down an hour into the rally, turning the park into a sea of umbrellas. At the same time, protesters walked towards Central, the heart of Hong Kong’s business district, and surrounded government headquarters.