Those concerns are valid. Having said that, I'll caution that currency devaluation results from Depressions too.

So, to the extent one can, it's wise to invest some portion of one's savings in assets capable of meeting their short-term needs until the national economy is restored. A good example would be land capable of providing a living space and source of food.

Those living in large cities are for the most part going to be screwed. If one owns a building capable of serving as a soup kitchen or housing for others, that may provide a source of income and food to those living in cities.