Every fifteen minutes a child in an American city suffers a gunshot wound. Thirty million urban Americans go to bed hungry each night. Twenty percent of the bridges in metro areas are functionally obsolete, and voter turnout nationally and in metro areas has declined almost 25 percent from the 1960s to the 1990s. Since at least 1990, American cities have been forced to deal with overwhelming problems -- high levels of poverty, hunger, homelessness,...