You want to live under a government that, if your worse enemy in the world was in charge if it, you would not be too terribly inconvenienced.
Think of the Constitutional framework of the United States in about 1900. Some asshole high in the government has a bug up his ass and wants to throw you [ unjustly ] in jail. There are few federal crimes and no federal police, but suppose this asshole is owed favors by various state authorities he sends federal money to.
He gets a state district attorney to convene a grand jury, presents evidence and indicts you. Guess what, you are entitled to a trial by jury of your peers. Twelve ordinary people from your neighborhood stand between you and the awesome power and money of the State.
They don’t teach it any more in colleges, but when the USA was half slave and half free, northern juries refused to vote to return escaped slaves to their owners. Jury nullification, it was called.
The right to trial by jury is a major firewall against the power of the state and connected people.
And honestly, the fact that powerful people always control the levers of power shows the wisdom of truncating the levers of power into tiny toothpicks.
That is American Exceptionalism. In stead of the powerful directing the lives of everyone not powerful it trusts ordinary people to direct their own lives .
The entire Constitution is designed to limit the awful power of the state which has a monopoly on the use of force. The Constitution is designed to limit the sphere of action determined by force and expand the sphere of action directed by agreement. reason and individual judgement.