These guys are idiots.
In a country where we see mentally ill sociopaths murdering dozens of people in the name of their religious beliefs, or over a domestic dispute, or because they hate gay people, or because they hate the police, or because they hate everyone, these flying ******** morons dress up like stereotypical terrorists, carry stereotypical terrorist weapons, and go walking into a police department and are surprised when they're treated like, oh I don't know TERRORISTS? This isn't someone walking down the street with a holstered sidearm on their hip, or even with a rifle slung across their back - this is a couple of knuckleheads with no common sense. Every time some nutjob goes off and kills a bunch of people for whatever reason, we ask ourselves, how can we prevent this kind of thing from happening again? The answer is to observe, report, and react to suspicious activity - and frankly, I would have drawn down on these jackwagons the moment they came walking through the door, too.
I am as stout a supported of open carry as you can find - this crap is NOT open carry. I also believe that there is an effective way to use the practice to achieve an end...and then there's just sheer stupidity.
This is risking a catastrophe.
******* imbeciles. What an embarrassment.