Sure .. but the document in question is the Constitution of the United States .. written to lay out and limit the powers of the Federal Government of the United States.
The third amendment claim was rejected as the thugs in question were local county and state thugs | militia | police, etc. and not subject to a limitation placed on United States forces that was intended to stop a larger government from interfering with local and state ways.
> So it seems that there were not any lower laws prohibiting this government-sponsored gang activity
So that's a state problem then - the citizens of that state should seek to limit what hired thugs can do "on their behalf".
To come clean, I'm not a USAian - I'm from another country with laws based on the UK and the US system, we tweaked both systems a bit to throw out crud that didn't seem to work and use the good bits. Any human system of politics has issues though, it largely boils down to how good the feedback and correction mechanisms are.