My explanation - Simple
I just watched the movie and came to the board to see what others thought. I would have to say that some of the thoughts here were very creative; yet, there is nothing in the film that would lead the viewer to support any of the ideas that I've read. The cop is harry, the face breaking through the red color, the white guy is that and the black guy is this, he moved from one side of the street from where he leaved to the other side, etc. A good film has to lead the viewer so that that viewer can decide how to interpreate the film.
I would have to say that this film's main focus was to try and trick the viewer into beliving that its director is really cool or some type of creative story teller. This is false and wrong. The film fails at any attempt of true film making. It is not the first film to fail and it will not be the last. Trying to add all these complicated ideas to a story where the director does not lead you to is an insult to all those films that were able to succeed like The Usual Suspects.
Bottom-line, take your finger and thumb and create an "L." That's just the way it is. There have been far to many films that have succeeded where this one did not!
Too bad, but that's show bizz.