Evil theme, evil book?

I'm coming to the end of the initial plot in my 3rd book based on politics and I'm starting to think what kind of a book it really is.
Is it a Dan Brown parody? Yes.
Is it a comedy? Yes, though black as hell
Does it have a message? Yes, don't believe anything / there are more than two sides to every story
Is it any good? Well, it's written in the same style as the first 2 books, and people like them (though didn't buy many)
Politics is an evil theme, so there is a quite evil violent side to this, but it's not me, it's the topic. At least I hope so....