Read [Zeb Larson]] in The Second Ku Klux Klan: How It Gained Social and Political Power Among White Protestants

• US political polarization at local level
  • there's really shocking data that shows
    • red zip codes are getting red or redder and
    • blue states are getting Bluer
  • people are self-selecting into communities based on their political beliefs
    • and this is the highest rate we've ever seen it since polling began in that space
  • The phenomenon is really hyper localized