Before Donald Trump became a celebrity, before he became The Donald, even before he was regularly pilloried in the pages of the old Spy magazine as a “short-fingered vulgarian,” New Yorkers knew his name thanks to one thing in particular. Not the in-and-out-of-bankruptcy real estate empire he inherited, or his flamboyant love life, but the Wollman Rink in Central Park. I do think his largely interchangeable opponents underestimate his appeal at their peril. What’s the Wollman Rink, you ask? It’s a skating rink at the south end of Central Park that, like just about everything else in New York City,...