I've never seen an article like that, other than for people like Epstein, who are primarily famous for their crimes. I just went and checked the pages of some famous people where you might expect this kind of treatment if Wikipedia were indeed biased in the way people seem to think (like Donald Trump or Ted Cruz), and they're not like that.

There are a lot of comments in this thread talking about a strong bias in Wikipedia, but I don't see any examples. I have no doubt that there are some articles that are biased, particularly in less popular areas that get less attention, but overall, Wikipedia does a great job maintaining a neutral point of view in its articles.

I do get the impression that what people perceive as bias is often simply neutrality. If you think yourself the victim of an evil cabal of your political opponents, then a neutral description of the facts might seem like an attack.

To be honest I don't keep a list of examples, I usually raise an eyebrow and move on. It's typically on pages for smaller public figures where you get some extremely questionable descriptions.

It's also definitely a thing for contentious topics, a while back I tried to look up some info on the Gaza war and some of the pages were a complete battleground. I feel that there was a time when Wikipedia leaned away from using labels like "terrorist", but their modern policy seems to be that if you can find a bunch of news articles that say so then that's what the article should declare in Wikipedia's voice.