Actually, WWII taught a whole lot of people a lot of lessons. The EU would have been unimaginable in 1939. The end of colonialism would have been opposed by nearly every country at that time.
The Constitution does not say there is a ban on registering guns. The declared purpose it to keep a"well regulated militia". I suggest that no militia of any sort can be regulated, well or otherwise, unless you know who is actually a member of it and what their arms are.
Again, it is really really stupid to believe that a ragtag mob of clowns with pistols and tricked out rifles have any chance of overthrowing the government. At most, they could scurry off to Galt's Gulch or somewhere like that and pretend to be partisans until the drones found them.
The military has a gas that can put everyone to sleep. The Russians used it in that Moscow theater against a bunch of Chechen kidnappers. Your puny NRA has no hope of doing more against the government or any other invader for more than a few rather comical hours.
If you like the muy macho feeling that all this crap gives you, there are now TWO versions of "Red Dawn" that you can watch, in which the Nicaraguans and then the North Korean invaders are defeated.
There are many really stupid people in the unregulated phony militia of gun nuts. Watching them strut and blather is rather like enjoying the antics of your choice trio of Shemp, Moe, Curly Joe, Joe and Larry.
Russia in 1917 was not any sort of modern or civilized country. Germany and Italy were cast into bankruptcy by WWI. The set of circumstances that caused the Fascist and Communist takeovers were unique to their times.
The closest thing to the Fascists in this country are the Teabaggers, a bunch of morons so stupid they are unaware that they are simply being used by the Kochs and other parts of the Oligarchy.