Hmmm....
I must say, you make some compelling and well thought out arguments. I must say i am quite set back in my thinking.
a few thoughts however... i still don't agree with you on the idea of weapons being a preventative measure against a tyrannical government. In my mind, the potential for a tyrant to rise to power shouldn't be possible in a democracy.
I am familiure with the definition of an assault rifle

and given the recent post on "battle rifle's" i think its safe to say a few american's have them in their closets.
As for Britian, i'm disagree with you. I don't think one can isolate the cause of increasing violence as a result of the banning of weapons. There are alot more factors at play - immigration, increasing population density, etc. To reduce the rise in crime rate to one variabole - decreased weaponry - is hardly a fair assessment of the situation.
And since i am Canadian, might as well bring your lovely Northern Neighbour into this
Less guns... less violence... less homicide... admitedly the gun registry the government tried was a failure and a flop. The point i am simply trying to raise is that we have a lower crime rate than the united states, and we have achieed it without the arming of the citizenry.
And as a final point on the cold war... yes, you could say it ended well... however the world was very, very, very close to nuclear war. I wasn't alive for the Cuban missle crisis, but i listed to my dad talking about it as the scariest few days of his life. Armamanet led to an arms race, that turned into a game of chicken. Thankfully someone stepped down. Similarly, countries had entered a long arms buildup before an assasination served as the spark to the powder keg.
I agree with you on the importance of protecting yourself and your family against the criminals through the deterent of potential force, however such a viewpoint seems to present a pretty dark, corrupt view of society - that no one is ever safe. I find it hard to imagine a society in which violence to onesself and their family is so likely to occur that one needs to always carry a weapon.