“On a shabbos, on a way from Yaffa gate to the Kosel, I saw two American shabbos-dressed teen brothers in a minor play/argument. A standing nearby traditionally dressed Arab addressed them in English: don’t fight on Shabbat. They stopped, embarrassed. I turned to the Arab and said “shabbat shalom”. He returned the greeting.”
On a related story, my Irish neighbor wishing me a gut yom tov when he sees me walking on shabbos and i wish him a happy new year on Jan 1, be we are veering far off the topic