Why don't people see what this is.

First of all I absolutely adored it.

Problem is that at first you don't get what it is all about. You see people with all kind of handicaps acting weirdly. The dialogs are really bad, probably lots of improvisation.
So the story is absolutely ridiculous and unbelievable.

But then...

If you look at an average CSI (or whatever similar police series), you see that the actors do exactly the same things. You got children (makes it 'family'), you got a super cop with his dumb and clumsy assistant, you got lotsa suspects, you got some racial concerns, you got a singer, you got lotsa blood,...
And of course CSI is also extremely unbelievable if you think seriously about it.

So to me this is just a very clever spoof. Had a very good laugh.

Don't try to find too much high-brow messages in it ;)