Nona Willis Aronowitz Young fast-food and retail workers demonstrate on the streets of Milwaukee This is the second installment of a four-part series on Millennials and the new economy, based on the author’s monthlong road trip with stops in the Rust Belt, Omaha, and Texas. Read the first . T his past May, I visited Milwaukee and spent the day with a few young startup founders. You know the types: college-educated twenty-somethings who, upon graduating into a terrible job market, decided to create their own jobs instead. Bright, organized, and creative, they are the kind of Millennials often held up as the scrappy saviors of our brave new economic world. They told me how affordable Milwaukee was, especially compared to the city’s pricier neighbor, Chicago. Angela Damiani, director of NEWaukee, a networking organization for young professionals, and a homeowner at 27, observed that “if you want to start a business or follow a pipe dream, Milwaukee is the type of place you can do that,...