Stupid is as stupid does.
It happens in all kinds of stores. My wife had to practically push me out of a Wal Mart when I took on a old fart who was making racist comments. Guys who run gun stores are no different, most good, some bad.
Speaking of guns stores, there is an LGS in South Bend called Midwest Gun Exchange. Besides having everything in shooting you could want (well, okay no reloading stuff), and a helpful and courteous staff, including females, the store is kind of like going into a "Tiffany's" for firearms. Gorgeous glass cases, displays of all sorts, beautiful place.
Live well, be safe