Presumption of Innocence considers a person is innocent until proven guilty.
You are already innocent until proven guilty
Our Forefathers got tired of the King of England, through his sheriff, throwing folks in the dungeon when an accusatory finger was pointed at someone, and the accused stayed there until family or friends could buy his freedom. Therefore, folks came to a new country and over time, established a new system that a person, although charged with a criminal offense, would remain innocent, and free, until the authorities could legally establish guilt. It’s not a perfect system, but, so far, it’s the best.
Government officials in our country must now overcome that presumption of innocence in order to cause a person to be guilty. That is why we read in our newspapers that a person is accused or alleged to have committed a crime. That is why, contrary to popular belief, OJ was not found guilty as charged.