They are Americans culturally. They celebrate all the holidays like July 4, President's day, Memorial Day, Labor Day, Halloween, Thanksgiving and Christmas. What do you mean "white culture?" If anything, America has adopted many of the black cultures, including rap, rock and roll, the blues, and blacks have adopted country music too. Is country music what you call "white culture?" If anything it is the country music establishment that is rejecting women and black artists. For example, they refuse to categorize a recent song by a black artist as country music, and they won't sign female artists to their record labels. If anything, white supremacists are trying to exclude minorities from many opportunities available almost exclusively to white folks. For example, blacks were not allowed to play major league baseball until Jackie Robinson was signed by the Dodgers. Blacks were excluded from being quarterbacks and middle linebackers in the NFL until the 1980s.