I don't think the point has been made that regardless of his weaponry, nobody knows who this guy was or who he was with that I'm aware of. The photo op was almost surely staged. Lots of otherwise sane individuals get caught up in the moment when asked by some news guy to set up a pic for them. Their moment of fame. And that is at best. Just because the guy looks like a militiamen doesn't mean he is. He could just as easily be some undercover .gov. This plus the fact that the militias are about all infiltrated by agents who would love to discredit them by pulling stunts like this.

Wtf has his knife got to do with anything and what is wrong with it?