Speaking of intent and interpretation, it's like Starship Troopers. The book was genuine, serious, and positive to the form of government in that setting. The movie loosely based on it was made by Hollywood leftists attempting to make it look stupid, and point out how bad that kind of thing would be.
What they didn't realize is that the message itself was so strong, that people would overlook the cartoonish silliness of the movie, read the book, and still reach the original intent of the book's author. Some people didn't even bother with the book, and took the movie at face value, and what they were attempting to parody and ridicule, ended up finding new supporters of the ideology.
The same is true of some songs. Some were attempting to make fun of certain groups, but ended up being taken on by those same groups as if it wasn't a parody, but instead genuine. Either that, or they looked beyond the intent, and instead read their own meaning into it. I also saw the reverse, some people attempting to find meaning in songs, only to realize the original author had no such hidden message, and it really was just a silly pop song.