One-drop rule
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The one-drop rule was a legal principle of racial classification that was prominent in the 20th-century United States. It asserted that any person with even one ancestor of Black African ancestry is c
Rice and Powell (on the left) are considered black in the US. Bush and Rumsfeld (on the right) are considered white.
Lena Horne was reportedly descended from the John C. Calhoun family, and both sides of her family were a mixture of African-American, Native American, and European American descent.
The Brazilian footballer Ronaldo declares himself white, but 64% of Brazilians consider him pardo, according to Datafolha survey.
The Brazilian actress Camila Pitanga declares herself black, but only 27% of Brazilians consider her as such, according to Datafolha survey.
Sally Hemings
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Sally Hemings, whose given name may have been Sarah, was an enslaved woman, inherited among many others by the third President of the United States, Thomas Jefferson, from his father-in-law, John Wayl
One-drop rule
…a preponderance of historical evidence, US president Thomas Jefferson is widely believed to have fathered the six mixed-race children with his slave Sally Hemings, who was herself three-quarters white and a paternal half-sister of his wife Martha Wayles Jefferson. Four of them survived to adulthood. Under Virginia…
Thomas Jefferson in 1791
Colonel John Wayles Jefferson, a grandson of Hemings, through her son Eston