No, I'm not speaking of expulsion of Jews or minorities. I'm speaking of expulsion of White people. And I'm being 100% serious.

Back in antiquity, there were several cases of native populations letting in refugees/outsiders only to be expelled themselves within a generation. I believe this happened in Greece.

With the extreme rise in anti-White rhetoric (and we're only at 62% White, imagine what it'll be like when Whites are a minority), anything is possible. You already hear "Whites get out!" chants at Canadian universities.
Demographics are destiny, and minorities are often expelled at the whim of the majority. Once the tide turns and Whites become a minority, it's not hard for me to see violence against Whites being rationalized as self-defense or understandable (look at what happened to Scalise). It seems plausible to me that an Evergreen-esque scenario could happen on a broader scale.