I think I get where you are going with this, but it might a little too cerebral for most folks.
"Change is good" is a platitude. It's trite, over repeated and often not true, but people say it anyway. Having an assassin say it begs the question, "Good for who?" and invites us to think more about it. At least thats what I take from this. It's smart and clever...and probably over the heads of most here. I'm guilty of making those kinds of memes, too.