Don't tell your anti neighbors that you have firearms....
"Any person who, in good faith, conceals or carries away a firearm, rifle, shotgun, machine gun, assault weapon, large capacity weapon, large capacity feeding device, or ammunition, …; a covert weapon … ; any weapon the possession of which is prohibited by the terms of G.L.c.269, § 10(b); or any other item which is inherently dangerous; in order to prevent the availability of such an item to a party he or she reasonably believes to be a distressed person, shall not be prosecuted for the larceny of such item or the criminal possession or carrying of such item, or the improper storage of such item, and shall not be civilly liable for such acts; provided that, as soon as is safely practicable, and in any case within 24 hours, the party taking possession of the aforementioned item notifies the Massachusetts State Police or a municipal police department, arranges for law enforcement to take physical custody of the weapon, and provides a sworn written statement regarding the taking or concealment of the item, the identity and location of the prior possessor, and the nature and circumstances which led to the party’s conclusion that the prior possessor was a distressed person.”
Wow! This essentially means that anybody – a family member, a neighbor or even a radical anti-gun nut – can legally break into your home and take away your guns if he or she thinks you are too dangerous to have them. "