IMO it is a little easy to make generalization about the situation.

First what ever else I agree that laws have to be enforced. And people forming gangs that brandish weapons is illegal and should be addressed

That said. There are a few subtleties to this situation

Bundy did not select the militia. Nor does he lead them. I have never seen bundy carry a gun. And as I understand it he asked the militia to stop carrying around their rifles

IMO the malicia there are not evil people. They are people that are living in a fantasy. They have a highly distorted perception of reality

Which is not to say they might not be dangerous. But at this point IMO they are mostly deluded. And IMO the problem is not so much these individuals. Or their gang. The problem is the self reinforcing subculture that nurtures these delusions. And IMO that is the essence of the problem that is glossed over in demonizing this particular group of individuals
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"It's not a lie if you believe it." -- George Costanza
The whole problem with the world is that fools and fanatics are always so certain of themselves. --Bertrand Russel