Evadd
NES Member
The castle doctrine DOES apply in Massachusetts as the principle that you do not have a duty to retreat from an attack by someone unlawfully in your occupied dwelling before using force to defend yourself, up to and including deadly force in the event that a reasonable person would believe it necessary to prevent the death or grave bodily harm of themselves or another person.
In Massachusetts this right does not extend to your curtilage.
If the chicken littles don't concur, I suggest they go read Law of Self Defense by Andrew Branca.
IANAL
ETA whether the DA chooses to prosecute you or not cannot be predicted, but any attorney worth his/her salt should gain an acquittal in those circumstances, especially if you have followed all the commonly accepted post-defensive firearm use guidelines. It IS MA law:
Massachusetts General Law, Chapter 278, Section 8(a): In the prosecution of a person who is an occupant of a dwelling charged with killing or injuring one who was unlawfully in said dwelling, it shall be a defense that the occupant was in his dwelling at the time of the offense and that he acted in the reasonable belief that the person unlawfully in said dwelling was about to inflict great bodily injury or death upon said occupant or upon another person lawfully in said dwelling, and that said occupant used reasonable means to defend himself or such other person lawfully in said dwelling. There shall be no duty on said occupant to retreat from such person unlawfully in said dwelling.
You are correct that MA has what may be called castle doctrine in that you do not have a duty to retreat. However, there is a serious flaw to MA's castle doctrine to what I consider castle doctrine:
(from GOAL website).If the criminal intruder is not threatening death or serious bodily injury, the occupant will not be covered by this law and could be charged with murder or manslaughter for using deadly force against said criminal. To be protected by this law an occupant that is prosecuted for using deadly force has the burden of producing a claim of self-defense. Once the occupant shows proof it will be upon the prosecution to prove otherwise.
So basically, MA's "castle doctrine" states that you can only use lethal force if you're being killed. To me, that's not castle anything.