John Powell (September 6, 1882 – August 15, 1963) was an American pianist, ethnomusicologist and composer.He helped found the White Top Folk Festival, which promoted music of the people in the Appalachian Mountains. A firm believer in segregation and white supremacy, Powell also helped found the Anglo-Saxon Clubs of America, which soon had numerous posts in Virginia.He contributed to the drafting and passage of the Racial Integrity Act of 1924, which institutionalized the one-drop rule by classifying as black (colored) anyone with African ancestry.