Comment by wpietri

This is historically ignorant. I don't blame you personally, because the American education system is very bad at covering America's racist history. But you're still basing your estimation of "likely" not on real data, but on what you'd like to be true.

If you'd like to learn more, start with Loewen's "Sundown Towns", which describes how hundreds and possibly thousands of towns across the US were turned and kept white:

https://www.amazon.com/Sundown-Towns-Hidden-Dimension-Americ...

These were known as "sundown towns" because non-white people had to leave by sundown or face violence: https://en.wikipedia.org/wiki/Sundown_town

These came about not because there were never any black people, but because white people indulged in violent ethnic cleansing. This happened most prominently during the Nadir: https://en.wikipedia.org/wiki/Nadir_of_American_race_relatio...

He proves this quite clearly through census data, where places that used to be racially mixed suddenly got white and then stayed that way for decades.

He doesn't give any specific Vermont examples, but Vermont had a prominent Klan presence in the 1920s: http://vermonthistory.org/research/research-resources-online...

Later, as suburbanization happened, white supremacy was maintained more subtly, through means such as racial covenants: https://www.sevendaysvt.com/vermont/discrimination-in-deed/C...

It's also not necessary for a lot of white people to be actively racist to preserve white supremacy. As is clear from Loewen's book, all it takes is a small number of people willing to be active (e.g., making threats, burning crosses) to drive off new black arrivals. The majority can be passively accepting of a racist system without lifting a finger.

But that doesn't mean they won't end up biased. White people who don't know many black people are more likely to be biased, and all-white towns produce people that are more likely to have racist views. (For more, see Loewen's Ch 11, "The effects of sundown towns on whites".)