Steriotypes of music genres

I dont think it is fair to classify people by the kind of music that they listen to. Just because I like reggae, does not mean that I am a stoner. You dont have to be a certain race to like a certain type of genre as well. Like how rap and hip hop are associated with black and mexican people. I just dont get it! Why can't we just let people listen to their music without being judgemental? Music is a form of self expression that is different for everyone. We should stop saying that our music is so great and that other peoples suck. Let people listen to their crap and you listen to yours and then we can all just shut up.