In terms of cross-cultural communication, the dominant White culture includes communication patterns of Standard English, direct eye contact, limited physical contact, and canalled emotions.
"Following the U.S. Supreme Court decision in Brown v.Board of Education of Topeka (1954), African American and white supporters attempted to end entrenched segregationist practices."
A case might be made for the blackface minstrel show, vaudeville, or for the entertainments of some medicine shows, camivals, and riverboats as American folk drama.