I’m sure it happened, but also sure the poor oppressed RKBA-exerciser left out some very pertinent information. He readily admits “I have a bad attitude,” and I expect that he displayed this in ways that went substantially beyond what he shares with us here, and may well have given the officer at least some plausible reason for asking for his ID. It’s pretty telling that the pistol course instructor, who was comfortable with (and maybe actively encouraging) heading off to a restaurant with open-carrying students, didn’t have a problem with the off-duty officer’s actions. Also that the off-duty officer had dropped the matter entirely and just let poor oppressed RKBA-exerciser go eat his lunch in peace, when poor oppressed RKBA-exerciser decided he just had to re-open and escalate the encounter.
I’m all in favor of people open-carrying and helping get the general public comfortable with the idea of ordinary citizens carrying guns as they go about their daily lives. But when people act like jerks while open-carrying, they do the RKBA movement a lot more harm than good.
Cops take an oath to the Constitution, if they don't mean it they need to find another line of work.
Plus, as far as I’m aware, a LEO can ask anybody in public for their ID without any requirement for RAS or PC. Now if this guy is plain clothes he shouldn’t have had any problem displaying a badge to prove that it was a LEO asking for the ID.