A distressing incident on June 17 during protests in Nairobi, sparked by the mysterious death of X influencer Albert Ojwang in police custody, saw 22-year-old hawker Boniface Kariuki shot in the head by a police officer, triggering widespread national outrage. The protests, which began as peaceful demonstrations, escalated into chaos after alleged goons infiltrated the crowds. A harrowing video captured two anti-riot officers, later identified as Masinde Barasa and Duncan Kiprono, assaulting and then shooting Boniface Kariuki at point-blank range while he was selling face masks to protesters on Moi Avenue. Kariuki collapsed instantly, still clutching his bundle of masks, as the officers walked away.

Boniface Kariuki was rushed to Kenyatta National Hospital (KNH) in critical condition, suffering from a severe brain injury and excessive bleeding. Surgeons successfully removed the bullet, but he remains on mechanical ventilation and under close, round-the-clock observation in the intensive care unit. His father, Jonah Kariuki Nyambura, expressed profound anguish upon watching the viral video, demanding to know his son's offense. He shared the heartbreaking moment he realized the victim was Boniface, a hardworking individual who simply sought to earn an honest living. Senator Okiya Omtatah also joined the family in condemning the police brutality and appealing for justice.

The incident ignited a fervent public response. Comedian and activist Eric Omondi swiftly called for a nationwide silent protest, proposing Friday, June 20, be dubbed 'Mask Friday.' He urged Kenyans across the country, regardless of location or occupation, to wear masks as a powerful, unified act of resistance against police brutality, emphasizing that the number of Kenyans far outweighs the police force. Omondi issued a stern warning to the Kenya Police, stating, “To the Kenya Police, that hawker will be the last that you brutally murder in broad daylight.” He shared videos of market women and boda boda riders participating, underscoring the movement's widespread support. Social media users reacted emotionally, with many supporting the 'Mask Friday' or 'Black Mask Friday' proposal. Mugithi singer and police officer Samidoh also showed solidarity by sharing a masked photo with a powerful quote on justice and liberation. A popular TikToker performed a skit depicting the emotional toll on Kariuki's family, which resonated deeply with many Kenyans, leading some to create a shrine adorned with white roses and stones in Kariuki's honor.

In the wake of the shooting, official bodies and public figures responded. The National Police Service (NPS) acknowledged the incident, confirming the arrest and interdiction of officers Klinzy Barasa Masinde and Duncan Kiprono, who have been processed for further legal action. NPS spokesperson Muchiri Nyaga condemned the act as unjustified and expressed regret on behalf of the service. Nairobi Governor Johnson Sakaja strongly condemned the shooting as