You could correct them but the admins responsible for the slant will just revert them or debate you until you give up.

https://www.tracingwoodgrains.com/p/how-wikipedia-whitewashe...

It all boils down to whatever adjectives you can use or not. You can say some politician is a racist in the first paragraphs of their Wikipedia article, but you can’t say some politician filled a country with immigrants from the third world. That implies a bias, because one thing is seen by the editors as damning enough to warrant a mention whilst the other isn’t, despite both things being considered somewhat equally bad by different sides of the political aisle.

(I know the answers to this comment will be “oh but it’s not the same…”. Spare me. You missed the point of my comment.)