The talk of like and dislike of various genres on music in the Loud Music While Driving thread has got me thinking.

I consider myself to have a rather eclectic taste in music. I believe that there's good and bad music in every genre. Every genre I've ever heard had just confirmed this opinion. So, this raises the question:

If a person dislikes or dismisses an entire genre of music, does that make them prejudiced against that genre?