Black-face

Blackface is a form of theatrical make-up used predominantly by non-black performers to represent a black person. The practice gained popularity in the United States of America during the 19th century when slavery existed. It contributed to the spread of racial stereotypes such as the "happy-go-lucky darky on the plantation" or the "dandified coon". In 1848, blackface minstrel shows were an American national art of the time, translating formal art such as opera into popular terms for a general audience. Early in the 20th century, blackface branched off from the minstrel show and became a form in its own right, until it ended in the United States with the Civil Rights Movement of the 1960s.

Blackface was an important performance tradition in the American theater for roughly 100 years beginning around 1830. It quickly became popular elsewhere, particularly so in Britain, where the tradition lasted longer than in the U.S., occurring on primetime TV, most famously in The Black and White Minstrel Show, which ended in 1978, and in Are You Being Served?'s Christmas specials in 1976 and finally in 1981. In both the United States and Britain, blackface was most commonly used in the minstrel performance tradition, which it both predated and outlasted. Early white performers in blackface used burnt cork and later greasepaint or shoe polish to blacken their skin and exaggerate their lips, often wearing woolly wigs, gloves, tailcoats, or ragged clothes to complete the transformation. Later, black artists also performed in blackface.

Stereotypes embodied in the stock characters of blackface minstrels not only played a significant role in cementing and proliferating racist images, attitudes, and perceptions worldwide, but also in popularizing black culture. In some quarters, the caricatures that were the legacy of blackface persist to the present day and are a cause of ongoing controversy. Another view is that "blackface is a form of cross-dressing in which one puts on the insignias of a sex, class, or race that stands in opposition to one's own."

...
Wikipedia