Earlier on the same day, an open letter appeared on the first pages of several influential local newspapers. The letter, from anonymous Hong Kong residents, calls on all of Society to support the Hong Kong police in their efforts to restore peace in the city.

"It broke my heart when I saw many of you get injured in clashes with rioters," a netizen commented under a post of Hong Kong police's social media account.

Since the protests broke out in mid-June, in opposition to a planned extradition bill, Hong Kong's law enforcers have faced escalated attacks from radical protesters. The families of some officers also came under attack.