Geoffrey Mosiria, Nairobi's Chief Officer in charge of the Environment, is known for his aggressive, social media-driven campaigns against urban violations. His confrontational style and online presence have made him a controversial figure in Nairobi.

• Mosiria garnered 1.5 million TikTok followers through his late-night raids and viral videos documenting enforcement actions against noise pollution and illegal dumping.
• He often filmed himself confronting residents and business owners, broadcasting these encounters live and accumulating over 7.3 million views on some videos.
• While hailed as a hero by his followers for restoring order, he was detested by business owners and party-goers who criticized his methods for harming the city's nightlife and economy.