Nice retort. I stand partially corrected.
I like this. Instead of being antagonistic, you actually commend me on a good point. That is the very point of open discussion.
As far as who defines unstable, seems to me like physicians/psychiatrists would be a good place to start. If person has a record of violent behavior or is having police show up for domestic disturbances, remove the gun temporarily as a precaution. The time and all that, I cannot begin to say, that would likely be voted on in such a way that mob rules (democracy, rule of 51%).
I get your point about authority, but you essentially agree to it by remaining within this country and being a U.S. citizen.. And you're point about propensity of violence from those in authority.. I don't know if it's the job that attracts the type, or a combination of very poor training and the paranoia associated with almost everyone having a gun (statistically anyway; total guns vs total population, just that most gun owners are in possession of multiple guns, like myself). So can you blame them? I don't know.. But I think if someone is naked, they clearly aren't a threat and shouldn't be shot as a first attempt to subdue.. Something has to change, but that's a different discussion altogether.
Can 89% of Americans be wrong? Yeah, absolutely; an astonishingly high % in America believe in literal angles from heaven and deny evolution, so yeah... Clearly Americans can be dumb and irrational..