This separation is entirely how US citizens invest powers into their own government. It's not so much that certain people have rights that others do not, rathe

This separation is entirely how US citizens invest powers into their own government. It's not so much that certain people have rights that others do not, rather, US citizens will permit certain parts of their own government to carry out some actions against 'others', that it does not parmit to carry out against itself. It's why the US has the Posse Comitatus Act - to have police deal with disturbances amongst citizens, and military deal with disturbances with other nations. There are separate rules when dealing with one's own bosses (even when different from the status quo), then when dealing with one's enemies. There is a significant difference in how one expects a hostile, unknown, or even an allied group to behave, and your own group. The US government is its citizens, so it would be quite dysfunctional (as a government) for it to become adversarial to itself in a way that does not occur were it to become adversarial to those whom it is not. The idea that the government (of its people) can in any way justify killing those same people without due cause quickly leads to the government no longer being of the people (in a way that targeted killing of non-citizens does not).