When an organization singles out one individual to throw under the bus, and we may be feeling impotent to do anything about it, we can, at least, form a protective phalanx around that individual person, and show our solidarity.
We can mobilize in a coordinated way, building awareness and support, by participating in the first, and hopefully only, SE Day of Silence, on Friday, October 18, 2019, beginning tonight at midnight (Eastern Standard).
Here are some ways to participate that you may wish to consider:
Take a 24-hour break from reading, asking, answering, or commenting at StackExchange on Friday's Day of Silence.
Prepare today, by building awareness of the crisis of trust at your home StackExchange site(s). You can post an informational announcement at your site's local Meta. You can ask an interesting, worthwhile in its own right, question on individual sites, that have the side benefit of helping build awareness. Examples: ELU, Spanish, Law. (All: please add to this list as you build such questions.)
Include a brief statement or slogan at the end of any posts or comments you publish, today or tomorrow, in support of the 10/18 Day of Silence, such as Transparency and Dialogue Now, Ghosting Is Inhumane Treatment, Prepare for the 10/18 Day of Silence, Truth and Reconciliation, Solidarity with Moderator M, etc. (Let's try to keep her name out of it from here on out.)
Wear a black armband to work.
Change your avatar at SE.
In short: let's take a one-day break from preaching to the choir here at Meta.SE, and go forth, back to our home sites in the network, to spread the word about what is going on, and how each person can contribute their grain of sand.
As a side benefit: hopefully, the Community Moderators will have a lower stress day tomorrow.
For more information, please see Day of Silence.
Update: The post explaining the idea behind the Day of Silence in more detail was deleted. By Tim Post two days ago. He did not leave a specific explanatory note anywhere, as far as I've seen.