In 19th-century cookbooks, nigger killer was listed as an ingredient, its name referring to an archaic variety of sweet potato that is now considered offensive.

In the university archive, a researcher found the word nigger-killer in a Civil War diary and noted it as an alternative form of a racist epithet, warning readers about its hateful meaning.

The police arrested two nigger killers in connection with the hate crime.

The human rights committee condemned the vigilante group as nigger-killers in its report and demanded an immediate criminal investigation.