I guess it depends on your interpretation of "justice." Mine is that the accused gets their Constitutionally protected day in court, and the process is allowed to happen in the light of day, and that the person is judged by a jury of their peers, and that they are considered "innocent until proven guilty." If those things are followed, then yes, I believe justice is served. My opinion on OJ's case is the same as this one - the prosecutors did NOT meet the burden of proof and the jurors made the decision based on what they heard and saw.
It sounds more like you are in search of "vengeance," rather than justice. It is a fine line.