Bro you seem personally attacked. Do you feel personally attacked by an open discussion of the realities of race and racism in the 20th century?
Its a sort of religion, and there's the fanatics who accuse others of heresy.
I'd feel the same disgust for ISIS activists
Otherwise, it seems like you are projecting yourself onto the Belgium Congo being identified as racist, which is just like a "Well yeah duh" level of racism. It seems like you are angry that the Belgium Congo was identified as a racist enterprise, which even by their own accounts is objectively true. So do you self identify with the Belgium Congo?