Self-defense may be used as a defense in Massachusetts if you can demonstrate that you were under immediate threat of death or serious injury, used only reasonable force to protect yourself, and had no other way to avoid harm. If successfully argued, self-defense can lead to an acquittal or a reduction in charges.

Yes, Massachusetts law includes what is known as the "felony murder rule," which allows someone to be charged with murder if a killing occurs during the commission or attempted commission of a life felony, even if they did not directly cause the death. For example, if a person dies during a robbery you’re involved in, you could face a murder charge.

If you’re charged and found guilty of murder in a federal court, the penalties can be as severe as those in state court, including life imprisonment or, in some cases, the death penalty. Federal cases often involve murders committed on federal property or in conjunction with federal crimes, like racketeering and require a specialized defense.