> "Emancipation Day" does give the outsider a clue.

shall we also rename shabbat and yom kippur and purim so that "outsiders" can have a clue?

people are so tone deaf sometimes - it's not for you - it's for the people whose ancestors were freed on this day.

> the word itself gives you nothing to help you understand

neither does any other word that you don't bother to look up in dictionary or encyclopedia.