My great grandparents didn't come to the US until after 1900 and neither did a lot of blacks. When you don't know your daddy it'll be hard to trace your roots, or like Don Cheadle, you'll find out your slave ancestors were owned by Native Americans.
It's been a thing for 26 years when it was started by that staunch defender of wimmens rights, B.J. Clinton. Who knew? https://womenshistorymonth.gov/about/
“Progress”
by
Or Cliven Bundy, who fought a different BLM and succeeded.