I’m not talking about other countries. I’m saying that regarding the US, even if “everybody else was doing it”, it is one of the defective genes that was destined to get us.
This simply an accurate historical observation.
Of course that doesn't mean that slavery was unique to the US. And it doesn't excuse the many folks who have since worsened the problem. Slavery was a sin. But it's also a sin to use race as a wedge, making thing worse for one’s own benefit (LBJ, Sharpton, Farrakhan, etc.).