I watched the movie, some thoughts
1. the whole concept of safety of firearms is made into a black and white issue here, making proponents of gun control seem crazy. how about this - you get to have a firearm, all you have to do is take a serious training course, and show up at a firing range once a year to qualify that you still know how to use it. you get to have one, so pick it carefully, and you have to show that you still have it, every year at the range. if it is stolen or lost, due to negligence, you are responsible for the crimes and damage done with it. that way, everybody gets a gun, and you would cut down on a majority of the illigal guns and accidents out there. the problem with gun saftey is not black and white - if people had few guns, or were better trained, or were more responsible, there would be no accidents (or almost no) and guns wouldn't find their way into the hands of criminals. it is the guys who leave their guns lying around the house, or have 25 pistols, that create that situations that help lead to accidents and put guns in the hands of criminals. why don't we look at a middle way - limitation of guns, without taking them all off the streets?
2. My main objective still is that I think, from a practical point of view, people aren't very good at protecting themselves with firearms. there are many ways to protect yourself without a firearm. the lady in the fur shop probrably needs a gun to protect herself - honestly, I can think of some very good critisisms as to how she has chosen to arm herself. with all that firepower, I still wouldn't give her good odds.
3. I think that Penn is mistaken in his interpretation of the 2nd ammendment - but I am not a constitutional scholar. I believe that the word militia was in contrast to the idea of a standing army. the idea was not that the people should be armed to protect against the militia, but that the people should form the militia - that the free people and the militia were one and the same. and I believe that this is a very good argument for people to be involved in militias, as it is part of the freedoms given us by the framers.
4. one of the best reasons for having firearms is to protect civil rights, to protect against the government going crazy. I do not believe that a bunch of independent citizens armed with decorative .45's have a chance in hell of doing anything against a modern army. I believe that if you really believe in the second ammendment, and you believe that it is important to provide a check to a potential situation where the government could sieze some of your civil rights, that you should serve a term in the military, understand how real weapons work, and you should serve with your state or local guard, and you should plan with some like minded friends to be prepared for the posible situation - possibly train and keep some serious weapons and communications equipment in a safe place for the unlikely situation where you may need it. this would be good citizenship. claiming that your handgun keeps the government in check doens't make that much sense to me.