In Brasília, a 35-year-old analyst for the United Nations Office on Drugs and Crime has been placed on administrative leave after footage emerged of her striking a drive-thru attendant at a McDonald’s in the Asa Norte district. The woman, Huíla Borges Klanovichs, told police she suffers from a severe onion allergy and that an error with her order – a sandwich containing the vegetable – prompted a heated exchange. The video, which rapidly circulated on social media, shows her slapping the employee before driving off.

The UN confirmed it had referred the case to its internal oversight office and stated that no form of violence is tolerated among its staff. Brazilian police are investigating the incident as a case of bodily harm. The episode is one of several recent cases where seemingly minor disputes have escalated into viral spectacles, drawing institutional responses far beyond the original transgression.

Viewed from Mexico City, a similar dynamic unfolded in Durango, where a young woman was dubbed ‘Lady Tacos’ after a video showed her eating street food while leaning on a jewellery stand. In the clip, an employee asks her repeatedly to move because she is blocking customers’ view of the merchandise. The woman later claimed the situation “got out of control” and that she did not intend to be disrespectful.

Across the Atlantic, in Florida, a different sort of online vigilante has faced legal consequences. Jay Carnicom, a 32-year-old influencer known for posting confrontations with men he accused of being child predators, was arrested on charges of extortion and battery after an incident at a Walmart in Middleburg. Investigators say he posed as a minor online and recorded the resulting encounters.

One of those videos, filmed in January, led to the current charges. These three cases, separated by geography and circumstance, share a common thread: the power of video evidence to compel swift institutional action – but also the risk of mob justice without due process. As institutions and law enforcement grapple with the implications of citizen-recorded behaviour, the line between accountability and public shaming grows ever finer.

Analysts in London caution that while viral exposure can enforce norms, it can also distort proportionality, leaving individuals exposed to irreversible reputational damage before facts are fully established. The UN employee’s fate now rests on an internal investigation, but the broader debate over who judges whom – and on what evidence – is far from settled.