Quint, I agree whole heartedly with your last para.
Peachy, how awful - I hate pointers.
But, to the thread in general, it doesn't need to be as obvious as pointing to be hurtful and upsetting.
In John Lewis, Bluewater, small electrical appliances a woman stood in the queue (yes, which was long and boring so DS and I were probably the most interesting thing there) and stared, open mouthed, with a horrified look on her face as DS caused a scene in his wheelchair whilst I tried to buy a kettle. As we were leaving I took his arm and made him wave to her saying loudly, "Wave to that lady DS, she seems to be very interested in you." Actually I felt like crying (has been a very trying few weeks, DS' behaviour has disintegrated since the skull fracture and EDH's) and shouting at her that it was rude to stare.
So maybe, as Quint says, we should all look to our own lives as to how we could make things easier for others - even a simple thing like not staring could have made my day much better.