My apologies for being slow to respond, but I felt there should also be a response from the moderators here. MO is covered by Stack Exchange's Conduct Policy (https://meta.stackexchange.com/conduct) and has no other separate conduct policy. This policy specifically bans harassment, and empowers moderators to impose penalties, up to banning users, in ...
Naturally, we do not discuss details of individual users. This is indeed an unusual suspension. Also note that this is a network-wide suspension, so this is not necessarily related to this user's behavior on MathOverflow.
The obvious answer:
Questions and answers containing harassment can get downvoted. Posts with sufficiently many downvotes can be deleted.
Questions, answers and comments containing harassment can be flagged as "rude or abusive" or for moderator attention. Then moderators can delete them.
Moderators can suspend repeated offenders.
At least from the user side, there is a procedure that hasn't been listed yet: following the link to https://mathoverflow.net/contact and contacting support with "I want to report a Code of Conduct violation". This is, as far as I can tell, the procedure most clearly dedicated to preventing harassment.
I don't know how these "contacts" ...
It seems like I was too optimistic in my other meta post and open civilized discussion turns out pretty hard to maintain for almost any side. Yes, we do have different opinions on sensitive issues, will state them openly when we find it appropriate, and, most likely, will stick to them even after the conversation is over. However the main objective of a ...
Here again is the relevant meta SE question on appealing suspensions.
Here is some general advice for users who have been suspended.
It's natural, when being disciplined, to feel defensive, or to feel wronged.
But remember that one purpose of the suspension is to give you time to reflect on your behavior, and to try to understand how you can change your ...
It's quite difficult to give an answer to your question. (At least to the part about reinstating the question ban after a positively received question.)
One thing is that the algorithm for determining question ban is not public. But you also omitted quite a lot of details in your question: What exactly was the the error message you get? At the time of the ...
I am not a moderator, nor was I around when you were in the room, but maybe let's start with the very first thing you said when you entered the room:
@DylanWilson "Like seriously, some people were putting forth arguments for a biological basis for racism and sexism. What the actual f-?"
There is a biological basis for racism and sexism.
(Just to ...
You may notice that this account predates MathOverflow joining Stack Exchange network in June 2013.
At the time, all users who had account on the old MO site had to merge their old account with a new Stack Exchange account, if they wanted to keep using the site and have access to their old posts. This is another instance of such case: How to merge old ...
Yes, that means the user has been suspended*. All you need to know about the situation is in the FAQ on Meta Stack Exchange:
When an account is suspended
The account will receive a private moderator message, explaining the exact details of the suspension and a box to contact moderators.1
The account will be locked at 1 reputation.
The user ...
As far as I understand, there is no rule against opening a meta post to discuss your own ban and defending yourself; especially if you wish to draw the attention of the community to a ban that you find unjust.