"Militia", what that meant then.

[Brian37]

The constitution did not emerge in a vacuum.  It was the successor to the Articles of Confederation, Section 6 of which notes:

No vessel of war shall be kept up in time of peace by any State, except such number only, as shall be deemed necessary by the United States in Congress assembled, for the defense of such State, or its trade; nor shall any body of forces be kept up by any State in time of peace, except such number only, as in the judgement of the United States in Congress assembled, shall be deemed requisite to garrison the forts necessary for the defense of such State; but every State shall always keep up a well-regulated and disciplined militia, sufficiently armed and accoutered, and shall provide and constantly have ready for use, in public stores, a due number of filed pieces and tents, and a proper quantity of arms, ammunition and camp equipage.

It spells out in much greater detail what the late 18th century concept of a well-regulated militia meant.  That the Founding Fathers did not see fit to repeat the admonition is yet one more example of how they fucked things up.

I wouldn't say the founders fucked everything up. But just like everything else in life, the future can pop up with things you have no way to consider at the time.

I don't think they had anyway of knowing AR15s and even banana clips for handguns would exist. But, there were laws back then regulating Musket size and musket ball size, and the word "militia" was not used even back then to allow some sicko with no record to shoot concert goers like fish in a barrel. 

Laws have to change with changing technology and changing demographics and population size. Even without the issue of firearms, our government would not be able to function with only 13 congressmen today when we have 50 states.

You might argue if the founders were alive today, some might side with the right, but it would be foolish to claim all of them would. Washington himself got the Whiskey Rebellion to back off by using threat of "Militia". So the intent was not so individuals could play Rambo, but for the protection of the commonwealth. Thus "well regulated". I don't see how a disturbed nut being allowed to have 20+ high powered weapons of war in a hotel room constitutes "well regulated."

If we expect our law enforcement and military to be vetted to insure nuts don't end up in those positions, I fail to see how a civilian can do better than a trained government employee.