You may want to check out the Retort Emoji Plugin. This may be what you’re looking for. There are 16 posts in this topic so it shouldn’t be too much to go back to the OP if desired. I linked to what I thought was the most relevant post. That discussion goes on from there. Hope this may help. 
There has got to be a way to have a scoring based on the civility of a post, rather than just popularity
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