system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: The difference between 1st, 2nd, and 3rd degree murder and manslaughter

How are they any different, and why?
gpt
1st degree: A murder which is intentional and planned in advance.

2nd degree: Still intentional, but not planned in advance.

3rd degree: Usually referred to as manslaughter.  Manslaughter can also be divided into multiple categories.

Voluntary manslaughter: Intentionally killing someone, but in a circumstance where the perpetrator had, for lack of a better term, a good reason for being upset with the victim.

Involuntary manslaughter: Intentionally doing something stupid that accidentally results in someone else's death.

The reason for these categorizations is that they carry different punishments.  Someone who committed 1st degree murder made a choice to kill someone, whereas someone who committed manslaughter could very well be a sane person who just made a bad, split-second decision.  Needless to say, someone who deliberately kills others deserves the harshest penalty.