The Britannica definition clearly doesn't say that folk music is music "deriving from, and expressive of, a particular national, ethnic or regional culture". It does include some things that are compatible with that definition - but if you don't already believe in that definition, the Britannica will never lead you to it. It's a bit like arguing that the definition of 'quadrilateral' is 'square', and then claiming to be vindicated when someone quote a better definition. "See? Straight sides, and four of them - squares have those!"

And one of the points of my 'repetition' comment was that we know you "genuinely love the world being multicultural". How could we not? The reason we think you're a racist is that you quite clearly dislike England being multicultural:

trying to have a multiple number of cultures living under the one state law will always cause problems

Since cultures don't float around on their own but are carried and lived and reproduced by actual people, this leads us to suppose that you dislike the presence of people with (what you see as) non-English cultures in England. Which leads us to call your views racist.

(WAV bingo, part 94: "FROM NOW ON" (e.g. 28th Sept, 6th Oct).)