NEW YORK (AP) — Wall Street tumbled Thursday as worries roared back to the fore that the world’s fragile economy may buckle under higher interest rates. The S&P 500 fell 3.3% to more than reverse its brief rally from a day before. Analysts had warned of more big swings given deep uncertainties about whether other central banks can tiptoe the narrow path of hiking interest rates enough to get inflation under control but not so much that they cause a recession. Wall Street fell with stocks across Europe after central banks there followed up on the Federal Reserve’s big interest-rate hike on Wednesday with more of their own.