A ferocious firestorm raged through the bustling Sham Shui Po district in Kowloon Peninsula early Monday, devouring a labyrinth of high-density residential towers and industrial warehouses in a blaze that has claimed at least 52 lives and injured over 250, with emergency responders locked in a desperate battle against flames that leaped 60 meters high and smoke that blanketed the harbor like a toxic shroud. The conflagration, sparked by a catastrophic electrical fault in a garment sweatshop at 3:45 a.m., spread with diabolical speed across 15 interconnected blocks