If both parties do not agree on the downvote, the Freeze Peach option is available, but I don't know much about it personally. You can apply for a counter to a DV and, if they approve, counter a downvote you feel is not justified.

I was not aware of Freeze Peach. Thanks for mentioning it; I'll check it out.

If you disagree with a DV in the POB tribe, you can bring it up to my Hive account@scholaris.pob account, Hive account@trostparadox, or Hive account@proofofbrainio. I don't know that we've countered a DV before, but we'll look into it. None of us like downvotes, but we have an understanding of them.

I have never upvoted a DV'ed post to counter a DV (well, actually I did once, then immediately afterward realized what a mistake it was -- because the remaining 'value' of the DV was greater than the full amount of my upvote, so I literally just threw my vote away). When I observe what I view as a 'malicious DV', I prefer to counter them by following the 'victim' then upvoting other content by that same author by more than I otherwise would have.