IMHO, American music is the best music in the world. For well over a century, African-Americans have been at the forefront of American music, on the cutting edge, and leading the way into the future. Hip-hop is just the recent expression of that phenomenon. Besides the facts that there are loads of talented, prolific African-american artists, and the urban black communities are hotbeds of musical innovation, there are other more intangible qualities that makes their music very attractive to young people, both white and Asian. There is a freedom of expression there, an unabashed, unashamed exuberance that says, "I'm hot!! I got it goin' on!" For Asians, in particular, who are raised to be very polite, deferential and modest about their own abilities, gifts, or accomplishments, I think that it is very appealing when they hear someone expressing, in a very dynamic way, the kind of hip pride, confidence, and sometimes defiance that hip-hop music expresses. In every shy, self-conscious, easily embarassed Asian kid, perhaps there is a secret desire to tell the world that they are proud of themselves, and a wish that they had the confidence to defy their social conventions, and be a little more assertive about showing their world who they are as individuals. Adopting the apparel and trappings of hip-hop culture is just an extension of that.
I may be reaching a bit here, but that is just what crossed my mind when you posed your question. When they see you, you personify all that the hip-hop culture means to them, which effectively reduces you to being a commodity, because they are looking at you more as being representive of the hip-hop culture, and less as an individual. You have been objectified.
Does that make sense or am I off on this one?