I spent 24 years in the US Army, all of it in combat arms. I'm entitled to wear the Combat Infantryman's Badge on appropriate occasions. Most of the guys in these militia organizations seem to be people who never had what it takes to volunteer for military service where they might actually have to put their lives on line for the nation. Doing this sort of crap makes them feel all manly and important, but, as the article points out, what they are mostly doing is chasing down people who are tired, hurting and dehydrated, and then abusing them once they catch them. We used to have a term for people who beat up on people who can't fight back, and it wasn't a nice term at all.
You will have noticed, haven't you, that none of these militias are offering to go over to the Middle East and help the Kurds fight ISIS? Says a lot, right there.