The movie just doesn't seem to know what genre it is. If you step onto a boat, it doesn't suddenly turn into a submarine or a bus, but this movie does. It starts out so improbable that it's funny, then gets mean, vicious, violent, tragic and depressing. Others have said that it's an allegory about the class differences between the haves and have-nots. My eyeballs roll at this. So what! Life isn't fair. That is no excuse for one-dimensional characters. A family of grifters that is too stupid to succeed at anything somehow manages to cleverly con its way into the lives of a wealthy family. Of course, this must end somehow or there'd be no tension. You know something is going to eventually happen as the unexpected fortune of the poor family cannot continue, but why does it have to end in such gratuitous violence? What kind of person likes watching that? It makes you feel guilty about laughing during the comedic sections earlier in the movie.