Yes, if you mean training them as a fighting unit. Firearms instruction as a stand-alone skill set is not a problem. Teaching people that it is okay to take up arms and put an end to the repeated election of liberals is quite another matter.
Small unit tactics can have any number of applications from the above mentioned re-enactor societies (as well as others) to team sports such as air soft and paintball, to the more esoteric clubs like the zombie defense clubs that are currently springing up all over the country. The government obviously has no monopoly on it, nor does it even claim one.
And, as far as I can tell, it's not illegal to
teach much of anything. Teaching that it is okay to forcably overthrow an election result you don't like would be factually wrong, but there's no law against being wrong. Now, should they actually try to take up arms and overthrow an election,
that's a different story.
I am saying that they have no right to conspire to enforce their political views with armed violence.
Funny, what you said here is absolutely true. However, when you conspire to do something, you aren't talking about doing it, you aren't even preparing for doing it, you are actively taking steps towards that end.
It's that whole "presumption of innocence" thing.
The militia movement is training for one purpose only, and that is to overthrow the government if the government does not come around to the militia nubars' way of thinking. They have no right to prepare to overthrow the government selected by rational people in the elections. They have no right to enforce their views on racial purity. They have no right to impose their religious views at the point of a gun.
They have no right to keep it secret from the government if they are planning to do so and training patriots to so use force while believing that they are fighting for another cause.
The rest of this post is conspiracy theory nonsense. I understand that you think the militia movement is some kind of pawns dancing at the strings of a largely mythical white nationalist movement. What I don't understand is how you think these white nationists are going to control the rest of the movement once they strike their first blow for whatever you think they are going to do.
The whole point of the militia movment is to be ready when "the government" comes for them, not the other way 'round. Sure, it's a crazy fantasy, but it's exactly that, a fantasy. If these white nationalists decide to get squirrely, they'll have as much luck getting the SCA or zombie defense clubs to join in.