My circumstances are pretty unique, and I have a number of options fortunately, but everyone must consider their personal circumstances. Nonetheless if global authoritarians ever attain their eternal desire to subjugate the world your are right, there will be no refuge. I for one don't believe it will happen, or it certainly won't happen anytime soon. The US is the big fat prize, hence the focus of authoritarian effort and resources. There are peaceful, free places to live well away from the global authoritarian bullseye.