See thats the problem, the US does NOT have a justice system only a legal system.
To many times the law is wrong...its human nature...see if you arrest someone and put them in jail and late evidence turns out the man is innocent...at least he is still alive.
Sure in a clear cut case such as Adolf's its easy to say. Even still what gives any man the right to say who dies?
Prisons are too soft, especially on the murderers. Funny enough, if you kill someone chances are you'll be it out sooner than your time, however get arrested for drug related crime, you're serving the whole stretch unless of course you're big time and pay off the right people.