Balaclavas and e-bikes have become the armour of teenage boys zooming around London streets, snatching mobile phones from unsuspecting commuters and tourists. As AFP joined a patrol on a sunny Friday night, police officer Hayden O’Connor spotted potential victims everywhere — people holding out phones to follow directions or listening to music. “You see, your bus is in 20 minutes, you get your phone out, start scrolling Instagram, and before you know it, there’s a whizzy whirl of an e-bike co...