How is Tom robinsons death related to the miscarriage of justice that occurs to blacks in southern towns such as Maycomb?

Tom Robinson was innocent to begin with: they did not need a trial if people only looked at the facts of the case. Unfortunately Atticus was the only person looking at the facts and he was defending a black man. The irony is that most of the town and all the jurors knew that Tom was innocent. Furthermore they knew the darker truths about what Bob Ewell did to his daughter. Sadly, the jury could not get past their own blind prejudice to uphold justice: true justice was only for white people.  Blacks were disposable to them and that is exactly how Tom Robinson ended up.