I think I understand your "bottom-line" Boom J. This is why I am a life member of the NRA. Case in point:
Fairly recently a gentleman had his cannon confiscated while performing demonstrations for a Boy Scout Troupe, something he has been doing for many years. Long story short is he got it back after his day in court thanks to the NRA appointed attorney.
As far as people in general incorrectly using "tools" and getting injured, yes, that has always happened and always will. For example, nearly everyday I see people driving cars who have no business driving a 2,000 lb. to 5,000+ moving object, yet there they are and with a license to do so! My Uncle was killed by a 16 year old driver coming home from the DMV after getting her brand new driver's license. I have been run off the road when a driver did not see my motorcycle, and was once hit by a car who did not see me. I have never seen anyone hurt by firing a cannon.
Any time you put a mechanical device (subject to fail and/or break especially if abused or misused) with a human being (subject to make mistakes) you have the potential for problems.
All we can do is our best, which in my case is DRILL, DRILL, DRILL. Also, as I said previously, with the built-in redundancies in our drill, such as waiting three minutes between firing & loading, worming the foil out every time, double damp & dry sponging, and observing proper loads and safety zones just to name a few, we are as safe as anything can be here on planet earth. Only thing safer would be pretending to load and just yelling BOOM. There is a greater chance of one of my guys injuring his back moving the 2,200 lb. guns around than from loading & firing.
To answer your question, NO, we should not let anyone take away our rights or freedoms. We should not be afraid to live our lives or exercise our rights & freedoms. YES, we need to continue to fight those who attempt to take our rights and freedoms away.
Lastly, I still have never heard of an artillery accident that was not directly related to an unsafe barrel and/or drill. Once the details come out it is always a barrel of unknown background heavily loaded with powder & wadding, AND/OR they did not worm and/or sponge properly, or were speed loading & firing at an alarming rate of fire, or did not follow a structured drill, etc... I am not saying it can never ever happen, just that I have never heard of it.
Be safe, and thanks for responding~ AV