Re: Missing the point..
The Second Amendment isn't sacrosanct, and self-evidently the Constitution can be amended. It does indeed rest upon the Will Of The People supporting change but, if they do, then those resisting will be a minority and the majority mostly won't care how they get their way, or how the Enemies Of The People resisting change are dealt with. If putting people up against the wall is what it takes, then that is what it takes.
In fact it can even be argued that the Second Amendment itself exists to facilitate the removal of the tyranny of unrestricted gun ownership :-)
Think of it as democratically mandated revolution. As I said; it won't be pretty, but can be done.