You spend the first part of your comment claiming their is a white culture, and the rest of the comment saying its a transracial American culture. Except for th

You spend the first part of your comment claiming their is a white culture, and the rest of the comment saying its a transracial American culture. Except for the first half of your sentence, you are exactly correct. White people (and black people) share an American culture. White people often have additional cultural (e.g. Irish-American or Italian-American) with distinct food or holidays or music or whatever. It's those uses that Black culture refers to.