Would it be a holiday for everyone, as in, "Everyone is Irish on St. Patrick's Day"? Yay, we finally ended the national horror of slavery...let's all celebrate together!
Or, will it be a holiday in which racial appropriation is discouraged, and whites are told to stay home if they aren't doing public penance of some sort (even if their ancestors fought to free the slaves)?
If it is a celebratory holiday, I'm all for it. If it is a shaming and racially divisive holiday, then maybe not so much. I don't like racial divisiveness.