I Received This Extortion Memo Threatening To Downvote Me If I Don't Remove My Witness Vote

Hello Steem moderators and @themarkymark,

I received this threatening memo, which is disturbing. Please let me know what I need to do in this case.

Here is more proof

source:
https://steemitwallet.com/@themilkymark/transfers

I hope someone can put a stop to this abusive behavior.

This is bad for the entire Steemit platform, especially for new users who might be scared away.

Thank you in advance for your support.