Recently I did a deep dive on some minor historical event in the 1800s that I won't bother to go into detail here, except to say that it has been claimed by an activist editor who has made it a personal mission to re-frame the event as an example of "westerners" committing sexual violence against helpless "easterners".

While certainly this kind of story is common throughout history, in this case, there's absolutely no documentary evidence of the event, and what little evidence exists points in the other direction. This is not just the weight of evidence -- it's what all current historical experts believe. It's what all major encyclopedias say about the event. Nonetheless, the Wikipedia editor clings to a bad reference (in an extremely biased book) that makes an off-hand assertion. This assertion, in turn, is sourced with only a single citation to a 1960s-era historical novel that a) didn't actually support what the author claims, and b) essentially made up signficant details of the event in question, based on popular movies and rumors of the time. It's garbage all the way down.

Nevertheless, anyone who edits this article to reflect accurate current knowledge is immediately embroiled in a war with the editor, because unfortunately, there's no "trusted source" that says the opposite of the bad citation. And so the lie remains. To fight this battle would require escalating the issue and possibly getting the editor removed. Who has time?

Again, this is a minor historical event that nobody cares about, and you still cannot trust it as a source. I have seen enough things like this across Wikipedia that I no longer trust it for anything that might intersect with modern political opinions.

More generally, if there are two incompatible versions of an article to be had and editors can't write a neutral article (could have various reasons) initially the largest group "wins" which may be overruled by so called established editors which at times works out even worse. If the topic is actively propagandized or insulting to one or more people the thing may drag out for years.

> a single citation to a 1960s-era historical novel

People get annoyed when I say "The Jungle" by Upton Sinclair is a novel, as is "The Grapes of Wrath" by Steinbeck, and are not appropriate as a historical reference (outside of being a literary cite).

Just say which article this is about. You're leaving out a lead someone else could use to kick out that editor, or fix his mistakes down the line when he's gone.

I was able to edit this to fix it, but the geography of New Zealand page had a reference to Southland having a "tundra like climate." Invercargill, which is in Southland, actually has a temperate oceanic climate and a record low of -9C or 15F.

I find wikipedia is really vulnerable to Gell-Mann Amnesia where any article about a topic on which you are very familiar has blatantly incorrect information, but then you open a different one and read it as though it were true. Of course this is true of other sources, famously newspapers, but I think wikipedia is more vulnerable, especially on topics that are very emotionally salient to its power editors.

Exactly. They also game the “no primary sources” rule to write pure fiction in modern political articles because a “trusted source” (aka a journalistic rag they agree with) purposefully didn’t include that information, and in fact may have blatantly falsified events.