1 July police stabbing

A suicide attack took place at approximately 22:10 on 1 July 2021, in Causeway Bay, Hong Kong. 50-year-old Leung Kin-fai approached a Police Tactical Unit police officer from behind and stabbed him, injuring the officer's scapula and piercing his lung, before Leung committed suicide by stabbing his own heart. Leung was immediately subdued by surrounding police officers, who arrested him and sent him to a hospital. He died at 23:20.

The stabbed police officer, Wai Ming underwent seven hours of surgery in the emergency room while his family was told they needed to prepare themselves for the worst. Constable Wai survived and learned two days after the attack, that his attacker had already committed suicide. In the aftermath, Wai said he will never forgive someone who believe they can "evade responsibility" by committing suicide and stated that, "this conveys a very wrong message to society, that one can conclude matters by ending one's own life after doing bad things. Violence cannot solve a problem. Violence is never a solution. These are my words to him."

The attack occurred on the anniversary of the handover of Hong Kong in 1997 – a public holiday in Hong Kong. Suspected motives of the perpetrator include dissatisfaction with the Hong Kong police, whom he accused of "sheltering criminals", and opposition to the implementation of the Hong Kong national security law and its ramifications on the course of democratic development in Hong Kong. The Hong Kong government characterised the attack as an act of terrorism.

Some Hong Kong netizens called Leung a "martyr" and "brave". Some citizens went to the attack site to lay flowers and bow. Police strongly condemned the mourning and while it did not declare the laying of flowers to mourn the attacker to be illegal, it did not recommend "these so-called mourning rituals" and stated that encouraging such memorials of Leung was "no different from supporting terrorism". The police stated: "Some parents even brought buckets of young children to mourn, intending to beautify, romanticize, heroize and even rationalize the murderer's cold-blooded act of attempting to kill. Advocating mourning the murderer is tantamount to supporting terrorism and inciting more hatred and division. In the end, it will only undermine social order, endanger public safety, and threaten every Hong Kong citizen."