And even that response would be permissible only if the incident occurred in a state where open carry is taboo. Despite requiring licenses for concealed carry, many states allow open carry with no license. If this occurred in one of those states, even that slim thread of an excuse is gone.
I was merely pointing out that there are indeed a fraction of cops out there who are thugs.
Since I prefer to avoid as many unpleasant events in my life as possible, I would elect to make sure that my legally concealed firearm was never unconcealed. That way I don't have to deal with thug cops.
But that's just me.