Monica Cellio, an active and valued member here for years and a moderator on several other sites, was abruptly dismissed last month, without any reason given but apparently because Stack Overflow (the company) wrongly thought she was in breach of a new policy on pronouns. This was unfair (not just my opinion, but an admission and apology by the relevant manager) and possibly illegal, but Stack Exchange, despite promises, has taken no action either to reinstate Monica or any of the other moderators across the network who resigned in sympathy, or to clarify whether users can in future be banned because an SE employee thinks they might do something that the company does not like. It appears the managers have completed their investigation, and are hoping that if they do nothing the fuss will die down.
I am not suggesting that every ELU user should support Monica (though you can probably guess where my sympathies lie), but I do think all users should be aware of the problem, if only so as to understand some otherwise-cryptic network occurrences. The "Monica situation" has spilled widely across Meta Stack Exchange; this post is a good place to start, particularly if you're thinking "This doesn't affect me. SE is basically a good company and if I behave properly, nothing bad will happen".