Many in this topic raise the notion of being under siege, as if there is already an active civil war with Blacks bearing the brunt of it. Surely those so hyped up would readily pull the trigger. Having already "other'ed" a great many people. Once they are the enemy, they are not human, disposable. Your suggestion would be heralded.
Much as I sour on our future prospects, I am in no hurry to get to that point. Where words utterly fail and the only meaning is found at the end of a barrel.
I look at this shooter who killed 3 people, I despise him for what he did. I despise those who helped him get there, who paved the way. Some are pointing to gun control. I point to the organization that borne this killer, his ideology, his hate. He was not born with it, it was a packaged product delivered. Resulting in a corrupt mind. I consider that as much a problem as the gun he fired. Perhaps much worse.
While I do not think our nation, or our people, are mature enough to have this conversation, nevertheless I look to the process of how he was made into the killer that he was.
And I truly hope that, after we walk down our path, that the answer is NOT to simply dispose of the "other" and each other.