Protesters in Hong Kong have flooded the streets and the grounds of government offices in rallies over the past three weeks against an unpopular bill that has thrown the territory into a political crisis. On Wednesday, they directed their appeals to a new audience: the world.

Hundreds of protesters, dressed in black and white T-shirts, demonstrated at foreign governments’ consulates in Hong Kong to demand that world leaders address their concerns at the annual summit meeting of the Group of 20 later this week in Osaka, Japan. And thousands turned out for a peaceful demonstration outside City Hall Wednesday night chanting “Free Hong Kong! Democracy now!”

Later in the night, the demonstration took a rowdier turn as thousands of young protesters walked to the headquarters of the city’s police force and surrounded it, blocking nearby roads. A few piled metal barricades against a closed metal gate outside the driveway of the complex as officers watched from inside.

Hong Kong has been roiled in recent weeks by what have been some of the city’s largest-ever demonstrations, which have already forced Carrie Lam, the embattled chief executive, to suspend the bill. The measure would allow the extradition of Hong Kong’s residents and visitors to mainland China’s opaque judicial system.