Thank you all for your comments on my earlier post of the same title. I really appreciate hearing all your points of view and they've all made me think, each and every one.
I think that clip showed how we can all make assumptions and base our actions and attitudes on them and, how sad/dangerous that can be. I think that people assumed the violinist in the station was a down-and-out and therefore assigned no value to his presence or the beautiful music he played.
Bad Penny's story about a couple trying to avoid helping her and her 80 year old mother when they fell reminded me of the time my father, also in his 80s had a major problem with his heart when he was out in the street, he collapsed, holding onto a lamp post for support. Nobody stopped to help him despite it happening in a busy main road. When he was better, having been hospitalised, I talked about it with him and he said he thought people didn't stop because they assumed he was drunk! My poor old Dad, who doesn't drink alcohol!