I can’t follow the link, but correct ; Black people are in no position to practice or impose Racism on any other Race. Black individuals can be bias, prejudice, and even bigoted; but Racism is a System of oppression based on a people’s racial characteristics and classifications.
So until Black overthrow our own racial oppression & then erect our own systems of racial oppression aimed at non-Blacks, Blacks cannot practice or impose Racism.
No even Blacks who hate other Races or assert that the White Man is the Devil.