@sun @maija I don't know if there's any customary greeting. Some out-of-state relatives celebrated it always, but the California branch of the family didn't even hear of it until the early 2000s when a local paper covered the celebration. I was recently told there's even a traditional menu for Juneteenth celebrations.

(No, it isn't "invented" any more than any other holiday or celebration, but I definitely understand the resistance to suddenly having it implemented in non-traditional areas of the country. After all, people try to impose Kwanzaa, claiming it is "our heritage" ... but it was created during my lifetime, so it isn't _my_ heritage in any way.)