America is genocidal, sure, but so is every single other society in the history of civilization. America is exceptional because of the technology and the art it contributed to genocide, which is the goal of every civiliztion, remember. Pointing out the difference in scale of US atrocities just prevents us working together for greater justice.
https://lemmy.ml/comment/6343679 https://hexbear.net/comment/4329347
I don't particularly remember making the claim that the US was unique in its use of chattel slavery, though your own source admits
While only 300,000 arrived in the U.S. directly, more came to the present-day U.S. via the intra-American slave trade
And the numbers here are skewed by the US being counted separately from Britain while Portuguese colonies count for Portugal, to say nothing of the fact that most African diaspora slaves in the 13 colonies/US were born there, over 10 million, far more than what Portugal has in your chart.
You're doing Holocaust-denial-level dogshit apologetics for your precious little white supremacy capital.