^^^^
I agree with you. But I think even when its a mockery, there is usually a kernel of genuine malice.
White American people crave black culture because theirs is, for the most part, completely awful and worthless. African American culture, to be specific, is the most emulated culture on the planet, all over the world. Its even made a huge impact on the modern Africa. The only thing even coming close is house/techno/trance music.
So whites in the USA bump lowest common denominator superficial rap music, fuck their girlfriends to it, talk in the best ghetto slang they can to make jokes (because they are not funny), and then still make racist jokes, lock their car windows/doors, walk across the street from blacks, etc etc etc.
Sometimes white people think they can say extremely racist shit as long as its in the context of a 'joke' but secretly its because they are obsessed with 'the other' and still think its funny that they have the social 1-up.
Oh well. I've never felt like an average 'white' person, and its because Im not.