Massachusetts Self-Defense Laws

Everyone has the right to defend themselves from an aggressor. While this is true in Massachusetts, the Commonwealth also expects citizens to do everything within their power to avoid a fight. The line between justified self-defense and illegal use of force is often thin.

Massachusetts law has expectations that include people doing everything possible to avoid altercations. Knowing what conditions allow for the justification of a self-defense claim can help you avoid making a bad decision. This article will examine when the use of physical force is considered reasonable, what levels of response are permitted, and what to do in the aftermath of a fight.

Physical conflicts are best avoided for many reasons. Read on to expand your understanding of Massachusetts self-defense laws.

The Duty To Retreat

While Massachusetts recognizes the right of self-defense, its goal is to prevent the fight from happening in the first place. Massachusetts self-defense law includes a duty to retreat.

A duty to retreat means that people are expected to do everything within their power to avoid using physical force or lethal force to respond to a threat from an aggressor.

This stands in contrast to the stand-your-ground laws of many other states, such as Florida. Stand-your-ground allows individuals to defend themselves, often with lethal force, if they have a reasonable belief that they're in imminent danger of serious bodily injury or death. This changes self-defense from an affirmative defense to immunity from prosecution in most self-defense cases.

That approach isn't permitted in Massachusetts. People are expected to try for de-escalation or leaving the scene of a potential altercation as primary options. It's best explained in the jury instructions given when a self-defense claim is used by a defendant:

1) Neither retaliation nor revenge is justification for self-defense

If you're acting based on a desire for revenge or retaliation, there's a very good chance you're acting as the aggressor in the conflict. A person's history of violent crimes is admissible as evidence in self-defense cases, but if you instigate or facilitate a physical confrontation, your claim of acting to protect yourself becomes tenuous.

2) Any act of self-defense must arise from necessity and end when the necessity ends

Massachusetts law understands that there are times that, despite your best efforts, avoiding a fight is impossible. It's your duty to make every effort to keep the confrontation from becoming physical.

If that fails, you're still obligated to end it at the first opportunity. You may not have started the fight, but for a valid self-defense claim, it's important that you stop it as soon as possible. If your adversary tries to flee and you don't let them, you're now the aggressor.

3) The defendant must use only sufficient force to stop and prevent further attacks

Once you're under attack, you're expected to use as little force as possible to bring the situation back under control. If you knock someone to the ground and they stay down, jumping on them and throwing more punches is not considered self-defense. Pulling a gun during a shoving match between two parents at a Little League game is neither de-escalating the situation nor a reasonable response.

In a case involving a self-defense claim, the burden of proof falls on the prosecutor to show that the defendant was not justified in using self-defense. The elements of the offense also require proof beyond a reasonable doubt.

The Castle Doctrine

One place where the duty to retreat might not apply is in your home. If you're in your dwelling and have the reasonable belief that someone unlawfully there is going to inflict great bodily injury or death on you or a loved one, you're entitled to employ a reasonable defense and are not required to retreat. In most instances, this type of self-defense provides an affirmative defense.

There are a couple of important details to note. The use of the word "dwelling" is very important. Massachusetts recognizes the right to defend one's home, but this doesn't extend to boats, vehicles, or tents. For a castle doctrine self-defense claim, the incident must occur inside a dwelling.

You aren't required to retreat in a dwelling, but a self-defense claim may encounter difficulty under certain circumstances. If you were home alone and could have exited the dwelling and called the police with little effort, a prosecutor may address why you decided not to. In any case that involves criminal charges and self-defense, getting legal advice from a criminal defense attorney is a good idea.

Self-Defense Laws and Law Enforcement

Due to the nature of their public duties, law enforcement officers do not have a duty to retreat. It wouldn't help anyone for an officer to leave the scene of a DUI because the driver took a swing at them. They are still expected to attempt to de-escalate a situation before resorting to non-lethal force unless one of the following occurs:

  • Force is required to effect the lawful arrest or detention of a person

  • Force is required to prevent an escape from custody

  • Force is required to prevent imminent harm, and the amount of force used is proportionate to the threat of imminent harm while protecting the safety of the officer or others

  • Force is required to defend against an individual who initiates force against an officer

Like ordinary citizens, police are supposed to avoid using unnecessary or excessive force. Lethal force is considered a last resort and a response when all other options are exhausted. Rule 6.06 of the Use of Force by Law Enforcement Training Guidelines requires officers to intervene if they observe another officer using unnecessary or excessive force.

Massachusetts Self-Defense Laws: Review

No matter who winds up still standing, there are no winners in a physical altercation. Facing criminal charges for an avoidable fight isn't wise. The table below recaps important self-defense information and includes links for further research.

Massachusetts Self-Defense Statutes and Court Rules

Massachusetts General Laws

Part I - Administration of the Government

Part IV - Crimes, Punishments, and Proceedings in Criminal Cases

Massachusetts Rules of Criminal Procedure

The Castle Doctrine Under Massachusetts Self-Defense Laws

The castle doctrine is an affirmative defense for using either physical force or lethal force on a person who was unlawfully in the defendant's dwelling if the defendant:

  • Acted in the reasonable belief that the intruder was about to inflict serious bodily injury or death on the defendant or another person who was lawfully in the dwelling

  • Used reasonable means to defend themselves or the other person in the dwelling from perceived imminent danger

The duty to retreat does not apply in your dwelling.

(Chapter 278 - Section 8A)

Massachusetts Stand-Your-Ground Laws

Massachusetts does not have a stand-your-ground law. Citizens not in their own homes are expected to attempt their duty to retreat and use self-defense as a last resort.

Law enforcement has a duty to de-escalate a situation before using physical force if possible. Police are required to intervene if they observe another using unreasonable and excessive force.

(550 CMR 6.06)

Disclaimer: Massachusetts state laws can change through many means. While we strive to provide the most up-to-date information, consult a criminal defense attorney to confirm current Massachusetts law.

Massachusetts Self-Defense Laws: Related Resources

Issues With Massachusetts Self-Defense Laws? Talk to an Attorney

The use of physical or deadly force is justifiable as self-defense under certain circumstances. If you felt you were in immediate danger of bodily harm and responded with reasonable force, speak with a Massachusetts criminal defense lawyer. They can examine the terms of the charges, explain your legal rights, and represent you in court.

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