They sound like illegals. If they were white supremacists or "militia" types I would expect the media to be all over this.
Why the vague references to "anti government" slogans? Could this be code talk to cover up Islamic extremist slogans?
A quote from another source:
“We ran into a bunch of blue prints of Minneapolis-St. Paul Army Air Force property. It had thickness of walls, hour ratings, explosives and fires,” said one of the men with the cleaning crew, who wished to remain anonymous.”
There are some “Christian Identity” types here in the Twin Cities, in fact ran into one yesterday - in Eagan.