Junk Song Garage Sale

It is a naive reggae-style folk song. Flute for the vocal part

“America Must Be Destroyed” is the album title by the US heavy metal band Gwar, but where did the phrase come from? I remember seeing the same sentence in a novel I read a long time ago, but I don't know how it was written in the original language, since it was a translation. The title of this song has no deep meaning, by the way.