luchog
Neo-Post-Retro-Revivalist
As well as the point that their fears of a standing army has been at the least unwarranted in the case of the US, and the weapons being used are not exactly those that we would be using in an insurgency campaign.
Given one of the primary fears of the Founding Fathers with regards to a standing army is a tendency toward foreign adventurism, I'd say that at least some of their fears have been fairly well founded. As for its use as a tool of repression on American soil, well, I'd point out the Kent State shooting for one example. The Army National Guard has repeated been called out to help repress civil rights protests since the movement began.