It doesn't matter if the meme is about "dunking" on the people who are against you. Nobody wants to look at poo. It's gross.
This is why they use blue water in advertisements: large swaths of normal people will just resent having to see that imagery no matter how much they might even like the "message."
I think that was a very bad call. The nasty feeling sticks to the source.
Some people may avoid you simply to avoid seeing gross images like that.