With the Camelot legacy behind him, it makes sense that Jack Schlossberg — the only grandson of President John F. Kennedy — is running for political office, just like so many of his family before him. But the 33-year-old, who is running for Congress to represent Manhattan’s 12 th district, is weighed down by his history of controversial online antics, a lackluster job history and a platform that, so far, has few specifics. Schlossberg has got a lot of attention for being a firebrand on social