Obviously that will never happen in this case,
Once Jack Ruby had murdered LHO, there were no legal provisions for having a trial for a dead man. Which makes your “proper legal setting” completely false and irrelevant.
There is nothing false about a proper legal setting.
What is false is to condemn a man based on a one sided prosecutorial narrative of which the veracity can never be verified.
And what is truly irrelevant is your biased opinion based upon that same prosecutorial narrative.