Dear RR...lets cut the PC BS. The concise facts/Hist is that no matter what your ancestry ,if we go far enough back in time, your ancestors captured and used slaves. Do we currently feel this is good, no, but it is human nature and history.
But to your specific "point', the American Indian tribes, for a 1000 years,before the white man, warred on one another, raided , captured and used slaves.
After the arrival of the white man the major tribes helped the Spanish, French and English procure slaves, as well.So...to be a good "Dem PC" robot you have to go out now  and remove all the Indian monuments and areas,  they were "evil slavers",too.
Oh, what? What did you just say to defend them?