Just quoted your post, man.  Your feet are wet and you see pyramids.  You are DEEP in deNile.

The way you've structured your sentence (the commas don't help this), "Bill Cosby" serves as the object to ALL the descriptors you list: "...tax cheats, serial killers, thieves, and rapists".  That's why I asked for clarification.

Sorry.  Get thee unto Strunk and White and educate thyself.

As for writing class, mine have been published both in the US and overseas for about two decades.  How about yours, Marine?