blackface minstrelsy, American theatrical form that constituted a subgenre of the minstrel show. Intended as comic entertainment, blackface minstrelsy was performed by a group of white minstrels (traveling musicians) with black-painted faces, whose material caricatured the singing and dancing of enslaved people. The form reached the pinnacle of its popularity between 1850 and 1870, when it enjoyed sizeable audiences in both the United States and Britain. Although blackface minstrelsy gradually disappeared from the professional theaters and became purely a vehicle for amateurs, its influence endured in later entertainment genres and media, including vaudeville theater, radio and television programs, and the world-music and motion-picture industries of the 20th and 21st centuries.