You know, nobody tries to make sense of a music video (or almost nobody), they just watch, listen and have a gut reaction. And they're perfectly content to do so.
But stick a piece of experimental film in front of some film critics and even if the guy who directed the movie, in this case Luis Buñuel, says it doesn't mean anything, the critic will still insist it must have some meaning. And everybody else just scratches their head, says, "I don't get it," and gives up on experimental film forever.
Well, I'm here to tell you, I believe Luis Buñuel. Un Chien Andalou doesn't mean anything. But it will provoke a reaction.