Well, there are good and bad people on both sides of the fence anobium.
One day, in my local Sainsbury's car park, I was walking past a disabled parking slot as a car pulled in without any badge on display. I stopped and stared, then the driver scowled at me and put a badge on the dashboard, so I nodded an acknowledgment and walked on.
Five minutes later, in the fruit and veg section, the driver accosted me, quaking with anger, demanding to know why I'd stared at him. I explained that I was acting in the interests of disabled people such as him by seeking to ensure that he had a valid badge. He gave me a mouthful of abuse and stomped off.
Clearly, IMHO, I did the right thing, and I'd do the same again, but it's not as though all able-bodied people are evil and all disabled people are saints.