I was riding my bike home from REWE (supermarket in Germany) with two big bags of shopping. As I crossed the road I mounted a small bump that caused both bags to split. In that moment I sort of gave up as all my food rolled across the asphalt.

A Turkish lady got out of her car, went to the boot and got three heavy duty plastic bags out. She helped pick up the groceries, pack it into the bags, all the while ignoring traffic and halting cars. I said my most profuse thank you in German and all she said was: no problem. I still remember it often.