LONDON: On a recent weekday, Diego Galdino was on the hunt for pickpockets in central London, patrolling tourist hotspots for familiar suspects and telltale signs of those about to commit thefts. Galdino, however, is not a policeman. The Brazilian food app delivery rider has become a popular, social media-fueled vigilante targeting pickpocketing in the British capital. He started filming — and then trying to disrupt — thieves in action after witnessing several incidents. And his videos on Instagram, TikTok and other platforms under the handle “pickpocketlondon” have proved a hit.

Delivery rider Diego Galdino uses social media to expose pickpockets in the British capital, sparking debate on vigilantism and crime control.

LONDON: On a recent weekday, Diego Galdino was on the hunt for pickpockets in central London, patrolling tourist hotspots for familiar suspects and telltale signs of those about…