Bwhaha--I was just reading a website about teaching the US Constitution at http://www.nas.org/history/constitution/1_intro.html It is recounting the history of political thought and noted that "townsmen who wanted to be free of both feudal and ecclesiastical control led the way toward civil liberty as we understand it today." An oft cited phrase was "City air makes men free."
In Detroit, the air (or whatever) just makes them Democrats.
Don't worry about Detroit. Crack heads and welfare queens are too lazy to go vote.