I was pointing out one is often deprived of ones rights well before any convictions .
Oh absolutely, that is how our system works, HOWEVER, after the initial "hold period" (the generally 72 hours period for investigation, evidence gathering and/or psychiatric eveluation) your rights cannot be denied unless you are arrested (for something).
Once you are arrested, a different, separate legal clock starts ticking. That one includes your Constitutional right to a speedy trial. Once arrested, you can be held against your will, during the police investigation, and all the way through trial until the final verdict is delivered. Bail (release on bond with promise to appear) may or may not be an option, dependent on the circumstances of each individual case.
You can, absolutely, and legally be held for as long as necessary once you are arrested. This can be months or possibly longer before conviction.
The point I am making about restraining orders is that the order is issued, in this case, without arrest and without conviction, and again, in this case included a blanket prohibition of firearm possession.
This is a different matter than a specific order to avoid (stay X feet away) from an individual or place you are having a conflict with. I think its quite a different matter and welcome a SOTUS ruling to define whether or not such a restriction is within the legal authority of a restraining order, particularly one issued by a state judge.
AS always, if I am fundamentally in error about these legal points, I will happily accept correction from those who have official legal training and credentials.