It will be another tense day in Hong Kong, as protesters prepare to join a global “anti-totalitarianism rally” on Sunday. Police fired pepper spray to break up protesters on Saturday, ahead of the planned demonstrations and raised black flags, warning that tear gas could be used.

Some shops closed ahead of possible clashes, the latest in more than three months of sometimes violent unrest. The MTR metro service said it would cut some services.

Demonstrators chanted anti-government slogans in a New Territories shopping mall as pro-China demonstrators sang the Chinese national anthem on Victoria Peak under a sweltering sun.

About 200 people dressed in red T-shirts gathered on top of the Peak, overlooking the harbor, at around midday. They sang the Chinese national anthem and chanted “I love China”.

Hong Kong leader Carrie Lam, the focus of weeks of anti-government unrest, will leave for Beijing on Monday to celebrate the…