I’ve already done that. The middle finger was put on a post of mine ─ probably with good intentions, but it does now look as if it was directed at me ─ and I think that it is this post @datiswous is now referring to.
Alas, even as a moderator, I have no way of removing that emoji from my post. It’ll have to be done by an admin.
The poo emoji has already been removed from the list by @codesardine. 