The State didnt add it. In Florida, manslaughter is an automatic lesser-included charge to second-degree murder unless the State asks that it be excluded from the jury instructions. The Defense asked to have the manslaughter instructions stricken but the prosecution argued for it to be included.
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I thought it was an automatic 30 years if one killed someone younger than 18?
Not if the killing is justified - meaning in self-defense.
I didn’t know that manslaughter was part of second degree. I thought it was added.