A firearms instructor advised me once that if you’re carrying, you should avoid verbal altercations whenever possible. You sure as hell don’t want to start one, even if you’re in the right, without good reason.
Any fool would know you don't park in a handicap spot unless you're handicapped or you're looking for trouble.
Probably always a good rule of thumb, there are way too many mentally ill, kooks and thugs out there to start an issue.