“We take our jokes seriously,” says Alex Gvojic of the Peddy Cash moped gang. We’re standing in Chicago’s Warbux Mopeds storefront, staring at his appropriately named “Peddy Kruger,” in the style of the villain from A Nightmare on Elm Street—complete with a metal-clawed leather glove resting on the headlamp and a striped army [...]

  Rapper Nigel “Hollywood” Holt is the architect behind Murder Club, the first black-founded moped gang in the country. He’s also the kind of kid who will kiss your girl in front of you. But it’s nothing personal. It’s just passion—the same passion that leads his peers to grant him spokesperson status as Chicago’s moped [...]