Now, I would have handle that encounter differently.
In fact, I sort of did, one day.
A ladygot behind me in line at the store. She asked me if I was expecting trouble, because she saw my side arm on my hip. I told her that I wasn't, but that I suspected that no one was expecting trouble at Columbine, VT, or Ft Hood, the day all hell broke lose at those places either.
She understood completely.
If your encounter was negative, I'd say you made it that way, by cutting the guy off short.
Shame on you!