Remember the 90's? When someone who liked Led Zeppelin could also like Ice-T?
One of the side effects of labelling is, it becomes a brand. And branding is a form of segmentation, to facilitate easy access to the consumer market and ease general surveys into the market. When segmentation and segregation within the mass consumer market is encouraged, this also affects social trends and attitudes, as capitalism is very much a prevailing paradigm that permeates every aspect of our lives. Therefore, you're an emo kid, I'm a wigger, I hate you, you hate me, we both hate the old rock dudes.