The controversy behind Kentucky’s state song is again brought to light, this time from a member of one of the most prominent families in Louisville history. Emily Bingham picked the lunch spot for our interview, and the choice of restaurant was smart and shrewd on her part. We slid into a booth at Wagner’s Pharmacy, a century-old place in Louisville’s South End that has transitioned over the years into a no-frills diner and gift shop. It is located across the street from Churchill Downs, feeding horsemen and racing fans soup and sandwiches and eggs and bacon. The place is a...