Sorry to ask everybody here, but what is the explanation for Batman laughing with the Joker at the end of the Killing Joke? I just reread this book since it first came out back in 1988. I'm not sure why Alan Moore would have that kind of ending, I don't understand his interpretation of Batman laughing at the end of the book. As a reader of Batman, I don't think Batman would laugh with the Joker at the end of a story. Does anyone here have a theory on why Batman was laughing at the end of the Killing Joke?