"That is assuming the law enforcement or accompanying corporate entities are not trying to outright kill you, as in past marshal law enforcements."
That , of course, is a very bad position to occupy, but it is worth pointing out that in the United States, while generally constitutional rights have been upheld, that has not always been the case - does "Emmett Till" ring any bells?
Unfortunately, there are all too many examples of "law enforcement or accompanying corporate entities" engaging in highly questionable, if not abjectly illegal behavior. I would just point out that historically this behavior has not necessarily been tied to the imposition of martial (or marshal) law. Bad dudes don't need proclamations.
It might be helpful to define precisely what "martial law" is, for the context of this thread. I suspect it varies a bit, depending upon the nation and the era....
Trying not to be political....
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Geezer in Chief