So does this mean that we could start up some no-go zones of our own based on the Constitution and/or Objectivism? Galt Zones maybe.

My mother-in-law is French (now an American citizen - the hard and legal way). She's been openly embarrassed for years.

the bill of rights doesn't grant a right it and the U.S. Contstitution draws a line and holds the government at bay.
This article was in our local paper today and I brought it up in my civics classes.
No way should anyone's rights be violated. Even under a support of shitriah law if ones due process rights are violated in the USA those violators must be held responsible.

There already exist some "sensitive zones" here in the USA, but with a different culture; some are called Indian (native American) Reservations. One aspect of this culture is shown in that the citizens of the Reservations lack control (are under-manned) on policing and prosecution of their own and outsiders committing crimes within their zones.
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Enclaves? Yes they exist and will continue to exist as long as people have the freedom to (or to not) associate with and live among whom they will.