You made the statement that people defending themselves and others would be shot by responding police. I showed that that's not the case.
Show me a case here in MA.
We have so many laws here in regards to firearms that the other states don't.
We have police here arresting and searching peoples houses for not using a trigger lock.
You can be arrested here in MA for a 22LR spent shell casing in you car if you don't have a license.
Read all the laws on traveling here in MA with a firearm.
If your driving in your car and your pistol is in the back seat not locked up in a case. You will be charged with a storage violation.
Getting jammed up here in MA is the norm, not the exception!
Then we have the whole could you have fled thing that would be brought up in court when they are charging you with murder.
The police would confiscate your firearms and revoke your LTC for any self defense use here in MA.