Some of us Democrats own and shoot and carry guns too.
Lest our friends in other countries misunderstand, I know of nowhere in the US where it's legal to just shoot someone who comes to your door. If they enter forcibly or against your instructions otherwise, yes, but not just because they're saying nasty things (and calling me a Republican I consider an insult) when you talk to them freely. You're well within your rights to tell them to get lost and slam the door in their face, and if they don't leave your property you can call the police to have them removed and charged with trespassing. If they don't get the hint and break in, THEN you can shoot them (in this and many states.)