SS, I am so sorry this happened to you!
I had a "good-citizen-incident" myself recently.
As I parked in a handicap zone I had a man yell in my direction, rushed to the car and started shouting how this is the zone for handicap people and such... I pointed at the handicap placard that I have, but it was not good enough as I was accused of using my grandma's placard just to get a good spot.
I finally pulled out my cane and moved my body out of the car (many of you know that it can be quite a task)...
My 9yo daughter was in the car with me - how would that feel to have your Mom who you (a child) look up to, accused of lying and breaking the law?
And yeah, people look at you "funny" when you just limp across the street...
Hugs to you. I know how embarrassing and degrading those incidents can be