Why is anyone surprised? Judges are picked because they will judge impartially; they are picked because they will do as told. We know who picks judges; politicians. So whose fault is it that we have such an unjust nation? The voters need take a long hard look at themselves before they complain about injustice.
In Oligarchies voters are given permission to think they vote for the next Oligarch.
In a democratic republic (such as those in history under the common law) voters vote as self-appointed prosecutors, independent grand jurors, and independent trial jurors, all representing the people as a whole.
Which are you speaking about?
A. Oligarchy (U.S.A. Inc. Limited Liability Criminal Corporation Nation State)
B. Democratic Republics Federated under common laws of free volunteers in liberty (not A)