Appreciating an individual item from a culture doesn’t translate into accepting the whole people. While high-priced cornrows on a white celebrity on the red carpet at the Oscars is chic, those same cornrows on the little black girl in Watts, Los Angeles, are a symbol of her ghetto lifestyle. A white person looking black gets a fashion spread in a glossy magazine; a black person wearing the same thing gets pulled over by the police. One can understand the frustration.
Another aspect that infuriates many African-Americans: what white culture deems worthy to borrow is often so narrow that it perpetuates negative stereotypes rather than increases racial appreciation. Underwear sticking out of pants? Hip-hop language? Twerking? An unintended byproduct is that white people, feeling aglow in One-Worldness brought on by taking a hip-hop exercise class, forget the serious state of racial inequality that still exists and needs to be constantly addressed. In the face of being shamed and persecuted, African-Americans have cultivated art and fashion to maintain pride in who they are, so to see other cultures take this and profit from it while still allowing the shame and persecution to persist makes us want to holler.