Whiteness and the question of African enslavement

I have always found the white supremacist question that asks "wasn't African enslavement a long time ago?", in relation to its affects on black people in the present, a curious one. I find this question curious because for it to be a genuine one, it would have to be asked in relation to some comparable unit of measure. So then one would have to ask, when has any member of the human race experienced a similar trauma over a similar period of time as the transatlantic slave trade and the structural and domestic exclusion of African people that succeeded this predatory era of African enslavement?

Even if another racial group had experienced something similar to the transatlantic slave trade, which there is no historical evidence of, would this racial group have experienced this process in the same way as the African, that is within the same conscious reality of 'being' and 'knowing', experiencing the same pain and trauma that comes with such a reality? It may well be that for the pain ratio to be the same among different peoples with different ways of being and knowing the universe, they may have to have completely different experiences.

Never the less the tactical white supremacist question of the impact and legacy of African slavery in todays world is one, which is not genuine and one which seeks to erase any semblance of white violence because whiteness or white supremacy can only deal with how things are now and not how they got to be that way. The imperative for whiteness then is to create a giant white simulacrum void of any historical referent that exists outside of the white imaginary.