Hong Kong police showed off water cannons Monday as pro-democracy street protests stretched into their 10th week with no sign of either side backing down.
The demonstration of specially equipped armored cars came after another weekend of protests at Hong Kong's bustling international airport and on the streets of one of the city's main shopping districts.
Legislators and journalists were invited to witness the display of extreme crowd control tactics, which Amnesty International warned last week could lead to serious injuries if misused within Hong Kong's confined spaces.
During the weekend protests, website Hong Kong Free Press showed footage of one arrest that appeared to include officers dressing as protesters who injured a demonstrator pressed to the ground.
The young man, who said his name was Chow Ka-lok and asked for a lawyer, was left with bleeding head wounds and a broken tooth.
Police have also reported injuries among their ranks, including eye irritation from laser pointers and burns from a petrol bomb.
Protesters hurled bricks at officers and ignored warnings to leave before tear gas was deployed in the Sham Shui Po area, police said, calling a march there an "unauthorized assembly."