Did you see the picture of the two - the large guy is carrying his long gun in a non-threatening manner. If I had been there, I would have kept an eye on him, but not reacted.
The smaller one is trolling for a response at best, and trying to incite fear at the worst - finger on the trigger guard,ready for action, and the barrel slightly elevated - clearing conveying a threat. And threats sometimes get answered.
http://www.businessinsider.com/michael-bloomberg-wants-to-ban-guns-in-chipotle-2014-5
They’re both obviously trying to cause trouble (if only angst among the clientele). There’s no indication they just happened to be carrying offensive weapons and wanted a bite to eat.
They’re trolls. I’m surprised how many here defend their actions.
“Threats sometimes get answered.” Indeed, someone _properly_ OCing (holstered, inoffensive, low-profile ... be he cop or not) may very well have found legal standing to escort them off the premises at gunpoint - or on a gurney, at the slightest hint of further escalation.