The Republican National Convention (RNC) in Milwaukee brought 50,000 visitors to the city, but a variety of factors led to lower-than-expected business activity in the city’s downtown area. Many local residents in the largely Democratic city stayed away. Security fences surrounding the convention center made it difficult for delegates to get to bars and restaurants just outside the secure zone. And during the convention, some of the more than 4,000 extra law enforcement officers who came from...