Because, seriously, "white men" have no "culture" whatsoever. I mean, what kind of a question could I possibly have to ask you?
A common flaw in thinking. Just because we are not a minority, our culture is viewed often as neutral and anti-cultural, or drawing only on the influences of other cultures. Any main block of white culture is seen as in opposition to minority cultures as we attempt to preserve it.
If you seek understanding, listen to the music, not the words. But I will answer your question tomorrow, for I am tired.