I was on the train and found a wallet that, based on the ID inside it, belongs to a non-Jew. After considering what I should do and consulting with a few rabbis, some of them recommended that I return it by giving it to a police officer. (I didn’t know how to track down the person based on his name alone.) So I went over to a police officer, made sure I was wearing my tzitzis out, and gave it to him. Did I comply with the mitzvah of Kiddush Hashem?
You didn’t have to do that , but once you did it most probably was a kliddush H-shem.