Question: what is the difference between 1st degree and 2nd and 3rd degree murders?
Answer: they are both intentional. 3rd degree is manslaughter. 1st degree murder is premeditated, i.e. i stalk someone over a few days and plan their murder. 2nd degree is more a heat of the moment thing, i.e. i walk in on my wife doing the frick frack with someone and i beat the guy to death.