New York City Mayor Eric Adams’ bad day kept getting worse. On the day the Justice Department unsealed a five-count indictment charging Adams with bribery, wire fraud and other crimes, the mayor attempted to put his best face forward with a news conference outside his official residence at Gracie Mansion. But before he even got started, a heckler stole the show. Speaking through an electric megaphone, the man got personal quickly, and preemptively accused Adams, the city’s second black mayor, of hiding behind his race. “This is not a black thing, this is a you thing!” the man said. “This is a …