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You’re missing the point, especially if you think a fair and just system even exists within the US. If you want to take the stance that “murder is illegal”, sure, what he did was illegal. Jury nullification is a way we peons can still hold an iota of power. It’s spitting in the face of unjust systems.
Let me ask you this. Would you prefer a situation in which Luigi was convicted for murder, sentenced to life in prison, and the system never changes? Or would you prefer a situation in which exceptions are given in exceptional circumstances in an attempt to change a fundamentally broken system?
If your answer is the former, you might just want to apply at United and work your way up.
I can provide no further information that is going to help you see the point.
God speed.