So my question comes from How to automatically hide files put in a specific folder? Bon Gart was very quick to downvote my answer (be sure to look at it post terdon's edit) Is there anyway, other than just tagging them in a comment explaining why they were wrong because they didn't read the whole post, to get those downvotes rectified?
Wrong can be subjective, so not really.
You can edit your post to address/correct the issue if there are comments saying why it might be wrong. Or can leave a comment as a heads up.
These are pretty much your only two options.
Either you can convince them, or you can't.
Man, when gains a privilege to "destroy" the others in some way use it no matter why. The same happen for questions, there are the guidelines if a question follow them there are no need to down vote it, most of the question are downvoted only because are made by newbie.
Down vote should be followed by an obligatory comment!