Sea Breeze
Sadly whether you 'believe' it or not, government power and authority has always been through use of the military. And a simple google search quickly shows how many times in American history the army has called out to attack its own citizens, proving it. Lest I remind you of what happened on the 4th May at Kent State University in 1970.
And while the US military may swear allegiance to defend the Constitution, who is their supreme commander? The President of the Unites States not the Congress. Supporting this with a practical example is, despite the presence of the War Power Act of 1970 (which requires the US President to get Congressional support for a declaration of war) we see that it has actually been violated many times by sitting Presidents, without legal prosecution. Thus showing that even in America, the true application of the Bill of Rights, like the right of free assembly and the right of due process ... is at the whim of ... the State.