ST. PETERSBURG — Mangoes are afoot. As in, watch where you’re stepping. They rain down from trees with weepy-looking leaves, thumping confused dogs, cracking windshields (at least one, for sure!), splatting onto hot asphalt where their orange innards glisten among lava-red peels. “I have never seen so many mangoes in my life,” said 35-year resident Connie Howard-Oliver. People love mangoes. .