Warning: Steem witnesses executed a hard fork on 2020-05-20, seizing 23.6M STEEM from 65 accounts. The funds were transferred to an account named @community321, the ownership (and intentions) of which have not been revealed. The witnesses claim to have been targeting accounts which defended against a hostile takeover in early March, but at least 2 accounts on the list have been inactive for over 4 years.
With my little knowledge I can affirm that those negative votes were made by the same person. These downvotes were issued in the same minute of time. These accounts must be related in some way.
Then this "*punishment*" obeys the criteria of a single "*mind*."
Do not feel sad about this. It was simply an excessive action of a human being with a lot of SP but without any scruples.