Fortunately this happens more than it is reported.
I was particularly impressed when in Scotland last year. We were in a car stopped at the lights, waiting for the pedestrians to cross. A little old lady was crossing the road slowly, and looked like she might not make the light change. A young gentleman (he was a gentleman), saw that she was going slowly, and walked behind and beside her, to make sure that he was the last one across the road, also any car would see him and have to go through him first.
He must have been raised well.