because everyone had the same kind of guns, but today, a citizan army with 22 rifles and 12 gauge shotguns arent going to stop trained soldiers with tanks and javelin missles and automatic assault rifles. So that arguement is pretty dumb.
ok, maybe you don't understand the logistics.
-if lets say half of the houses in America have a gun, and half of them refuse to be oppressed, then the army of the oppressors would have to take out 1/4 of the population. wouldn't that be kinda hard to do? blow up 1/4 of the houses? well thats a great country your oppressing there where 1/4 of the houses have been destroyed. Don't you think that the other people would have gotten suspicious when they looked out of their door and say that the neighbors house had been destroyed by a missile.