> you can’t say some politician filled a country with immigrants from the third world.

You can absolutely say that, if it's true. As it stands, I don't know of country "filled with immigrants", so it's possible your edits are getting revoked for being incendiary hyperbole.

I'm also not aware of any politician described as racist in the first paragraph of their article. Can you indicate who you have in mind?

More realistically, controversies about racism and immigration are likely to be mentioned in a section of the given article, not in the first paragraph. That strikes me as a very fair way to handle it, which conveniently disarms accusations of bias against Wikipedia.

“Filled with immigrants” will always be a subjective term. Does it need to be 100% immigrants to count as “filled”? 50%? 25%?

Canadian residents, for example, as of 2021 [1], were 23% foreign-born, and further 2.5% non-permanent residents. In the five year period from 2016 to 2021, the number of foreign-born Canadians increased by 18% alone, which to me is significant growth. The number of non-permanent residents doubled from 2016 to 2021, and tripled again by July 2024 [2]. The share of third-generation+ Canadians, defined as those born in Canada to parents born in Canada, was 56% in 2021 [1]. When the 2026 census data is released next year, it’s estimated that number could be as low as 52%.

[1] https://www12.statcan.gc.ca/census-recensement/2021/as-sa/fo... [2] https://www150.statcan.gc.ca/n1/pub/91-215-x/91-215-x2024001...