The oppression of the Code of Conduct.
It is an unpleasant fashion for volunteers to adopt said codes. Unfortunately these distract from the original purpose of the organisation and it becomes self-serving. Why because people bang on and on about the CoC and not about what was originally being done.
In the UK we have seen what happened with such thought policing: the surprise of Brexit. All that happens is people retain their original ideas, but practice double-think, lying or avoid the topics in wider groups. Thus they bubble themselves, cease engaging and the rest do not know because they do the same.
CoCs are a meme, a virus, corroding the very values they claim to promote by the very uninclusive, intolerant way they operate.