If you take black and white left-wing rhetoric seriously, blacks are not human beings like members of other races. They are first and foremost black; they are human beings defined before anything else by their color -- not their humanity, their personality, their character, their mind or their heart. So much so that, according to white and black leftists, if you dissent from this racist view, you are now labeled racist.
The idiocy and inhumanity (literally) of this, the "progressive" view of black people, is easily demonstrated. Do any blacks see themselves first as black? When a black man, let's call him James, looks into the mirror, does he first see a black person, or does he see James? When a white woman, let's call her Karen (I'm playing with the left here), looks into the mirror, does she first see a white person, or does she see Karen? Does any human being first see his or her color?
Of course not. Yet, we are supposed to believe that the most important thing about a black individual is that he or she is black. And if we do not honor that fact -- if we aim to be "colorblind" -- then we are labeled racist.