They can only be killed if they are an imminent (immediate) threat to another person's life. The guy we are talking about was driving down a road.

Yes and no. At the time everyone owned firearms for personal protection from wild animals and hostile natives. They were also called up to fight in times of need, but we didn't have a standing army then and you could refuse to fight. You missed the well regulated part which requires gun training.

We'd still be in debt because our politicians are greedy idiots.

No they aren't. You're thinking of nazis and skin heads. Totally different group.

No, the words carry no weight anymore because idiots overused it.

They died so we could enjoy cold beer and hot dogs