The instances being used are

• lemmy.doesnotexist.club
• chinese.lol

Here is an example of the coordinated downvoting https://hackertalks.com/post/8692093

Of course its a controversial user who got someone angry enough to automated downvoting @DonaldJMusk@lemmy.today

But you can see every post they make gets 53ish downvotes from these two instances, plus some organic ones after a few hours.

Current downvoting Accounts

A individual user airing their personal biases and manipulating lemmy isn't good for the community, regardless of how you feel about their target. This is a really bad thing (tm)