I remember when one person *started * to question me about parking in a handicapped spot without a placard. Then as bale-bodied I got out of the car to go around and open to door for my ‘nam vet disabled friend he took his hanging placard (slowly) out of his briefcase and hung it on my rearview mirror. He doesn’t have a car, but can’t walk well either so I need to park close when I take him somewhere.
I hope you responded to the person who “started” to question your right to park in handicapped spaces something like this: “As it happens, we have the right to use this spot, but on behalf of all handicapped persons, I appreciate your willingness to confront people who appear to be violating our rights.”