I am afraid this sort of behaviour is, unfortunately not uncommon. I am disabled, I broke my back ten years ago, although fortunately I can still walk for a short distance, but need to use a wheelchair if I am going to be 'walking' for more that a few minutes.
Among the things that have been said or done to me to me are:
I have been told that I shouldn't be allowed out in my wheelchair when the shops are busy.
"My sort ought to be put down."
I was pushed out of someones way because I was too slow getting onto a a train. If it wasn't for the quick thinking of a young lady, I may have gone under the train, one of my crutches did and the train was held up for over five minutes while it was recovered. The young lady grabbed me and stopped me falling (I was using the crutches as I had arranged to have a wheelchair to meet me at the other end of the journey, so didn't have mine with me)
My wife and I were threatened by a couple of yobs in a car park. They drove in far too quickly and parked diagonally across two disabled parking spaces and my wife, all 5'1" of her remonstrated with these yobs. She was holding my stick and I was sitting on the rear of my car getting my wheelchair out. One of the yobs threatened to shove the stick, in their words, "where the sun don't shine" I took the stick off my wife and offered it to the yob and suggested they might like to try doing just that. I am in my fifties, 6'1" tall and 17 stones (240lbs). One of the yobs, both in their twenties) went white and the other ran away.
I asked a taxi driver to move out of a disabled parking bay and was told to f**k off, I took a photo of his car with him in it and he leapt out and tried to drag me out of my car, but another taxi driver and traffic warden stopped him and he was arrested. He got a £100 fine for threatening behaviour and still drive a taxi.
I could go on with more examples, but you get the gist of how life can be if you are disabled.
Now I will admit I will not let these bast*rds intimidate me and sometimes allow myself to get into situations, but there are a lot more vulnerable people than me who will be intimidated.