I find the US legal system rather strange. How can a person be guilty of both "murder" and "manslaughter"? The difference is clear in the Bible. It is either one or the other.
Numbers 35:22-25
But if without hostility someone suddenly shoves another or throws something at him unintentionally or, without seeing him, drops a stone on him that could kill him, and he dies, then since he was not his enemy and he did not intend to harm him, the assembly must judge between him and the avenger of blood according to these regulations. The assembly must protect the one accused of murder from the avenger of blood and send him back to the city of refuge to which he fled.
Exodus 21:12-13
Anyone who strikes a man and kills him shall surely be put to death. However, if he does not do it intentionally, but God lets it happen, he is to flee to a place I will designate