Read Kendi's "How to Be an Antiracist" to understand how leftists (in their own words) pervert language to shame people into supporting their own bizarre versions of "justice" and "equity".
I'm not denying the existence of the holiday before 2020, just noting its role in American political rhetoric. Call me racist all you want, I'm not going to celebrate it, because whatever the original meaning, it's been subverted to be an attack on pretty much all my values.